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UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
 
 
 
Form 10-K
 
 
 
 
     
(Mark One)
   
þ
  ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)
OF THE SECURITIES EXCHANGE ACT OF 1934
    FOR THE FISCAL YEAR ENDED DECEMBER 31, 2006
OR
o
  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
OF THE SECURITIES EXCHANGE ACT OF 1934
    FOR THE TRANSITION PERIOD FROM          TO          
 
COMMISSION FILE NUMBER: 000-24647
 
 
 
 
TERAYON COMMUNICATION SYSTEMS, INC.
(Exact Name of Registrant as Specified in Its Charter)
 
     
Delaware
(State or Other Jurisdiction of
Incorporation or Organization)
  77-0328533
(IRS Employer
Identification No.)
 
2450 WALSH AVENUE
SANTA CLARA, CALIFORNIA 95051
(408) 235-5500
(Address, Including Zip Code, and Telephone Number,
Including Area Code, of the Registrant’s Principal Executive Offices)
 
 
 
 
SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:
 
     
Title of Each Class:
 
Name of Each Exchange on Which Registered:
 
None   None
 
SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT:
COMMON STOCK, par value $0.001 per share
(Title of Class)
 
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.  Yes o     No þ
 
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.  Yes o     No þ
 
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirement for the past 90 days.  Yes þ     No o
 
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  o
 
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act. (Check one).
Large Accelerated Filer o     Accelerated Filer þ     Non-Accelerated Filer o
 
Indicate by check mark whether the registrant is a shell company (as defined in Exchange Act Rule 12b-2).  Yes o     No þ
 
The aggregate market value of the voting and non-voting stock held by non-affiliates of the registrant was approximately $83,479,370 on June 30, 2006. For purposes of this calculation only, the registrant has excluded stock beneficially owned by directors and officers and owners of more than ten percent of its common stock. By doing so, the registrant does not admit that such persons are affiliates within the meaning of Rule 405 under the Securities Act of 1933 or for any other purpose.
 
Indicate the number of shares outstanding of each of the registrant’s classes of common stock, as of the latest practicable date: Common Stock, $0.001 par value, 77,637,177 shares outstanding as of March 9, 2007.
 
DOCUMENTS INCORPORATED BY REFERENCE
 
Portions of the registrant’s definitive proxy statement for the 2007 annual stockholders meeting are incorporated herein by reference in Part III of this Annual Report on Form 10-K to the extent stated herein.
 


 

 
INDEX
TERAYON COMMUNICATION SYSTEMS, INC.
 
             
        Page
        No.
 
  Business   3
  Risk Factors   12
  Unresolved Staff Comments   38
  Properties   38
  Legal Proceedings   38
  Submission of Matters to a Vote of Security Holders   42
 
  Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities   42
  Selected Financial Data   45
  Management’s Discussion and Analysis of Financial Condition and Results of Operations   46
  Quantitative and Qualitative Disclosures About Market Risk   68
  Financial Statements and Supplementary Data   69
  Changes in and Disagreements with Accountants on Accounting and Financial Disclosure   103
  Controls and Procedures   103
  Other Information   110
 
  Directors, Executive Officers and Corporate Governance   110
  Executive Compensation   110
  Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters   110
  Certain Relationships and Related Transactions, and Director Independence   110
  Principal Accountant Fees and Services   110
 
  Exhibits, Financial Statement Schedules   110
  114
 EXHIBIT 10.31
 EXHIBIT 21.1
 EXHIBIT 31.1
 EXHIBIT 31.2
 EXHIBIT 32.1
 EXHIBIT 32.2


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PART I
 
Item 1.   Business
 
Overview
 
We currently develop, market and sell digital video equipment to network operators and content aggregators who offer video services. Our primary products include the Network CherryPicker® line of digital video processing systems and the CP 7600 line of digital-to-analog decoders. Our products are used for multiple digital video applications, including the rate shaping of video content to maximize the bandwidth for standard definition (SD) and high definition (HD) programming, grooming customized channel line-ups, carrying local ads for local and national advertisers and branding by inserting corporate logos into programming. Our products are sold primarily to cable operators, telecom carriers and satellite providers in the United States, Europe (including the Middle East) and Asia.
 
This Report on Form 10-K includes trademarks and registered trademarks of Terayon Communication Systems, Inc. and its consolidated subsidiaries. As used in this report, the terms “Terayon,” the “Company,” “we,” “us” or “our” refer to Terayon Communication Systems, Inc. and its consolidated subsidiaries. Products or service names of other companies mentioned in this Report on Form 10-K may be trademarks or registered trademarks of their respective owners.
 
We were incorporated in California and reincorporated in Delaware in 1998. Our principal executive headquarters are located at 2450 Walsh Avenue, Santa Clara, California 95051. Our telephone number is (408) 235-5500.
 
History of the Company
 
We were founded in 1993 to provide cable operators with a cable data system enabling them to offer high-speed, broadband Internet access to their subscribers. By 1999, we were primarily selling this cable data system — composed of cable modems and cable modem termination systems (CMTS) — which utilized our proprietary Synchronous Code Division Multiple Access (S-CDMA) technology. Also in 1999, we initiated an acquisition strategy that ultimately included the acquisition of ten companies to expand our product offerings within the cable industry and outside of the cable industry to the telecom and satellite industries. With the market downturn in 2000, we refocused our business to target the cable industry and began selling data and voice products based on industry standard specifications, particularly the Data Over Cable System Interface Specification (DOCSIS), thereby beginning our transition from proprietary-based products to standards-based products. Also at this time, we focused our business on providing digital video products to cable operators and satellite providers. Since 2000, we have terminated our data-over-satellite business and all of our acquired telecom-focused businesses and incurred restructuring charges in connection with these actions.
 
In 2004, we refocused the Company to make digital video solutions (DVS) the core of our business. In particular, we began expanding our focus beyond cable operators to more aggressively pursue opportunities for our digital video products with television broadcasters, telecom carriers and satellite television providers. As part of this strategic refocus, we elected to continue selling our home access solutions (HAS) product, including cable modems, embedded multimedia terminal adapters (eMTA) and home networking devices, but ceased future investment in our CMTS product line. This decision was based on weak sales of the CMTS products and the anticipated extensive research and development investment required to support the product line in the future. As part of our decision to cease investment in the CMTS product line, we incurred severance, restructuring and asset impairment charges and were subject to litigation from Adelphia Communications Corporation (Adelphia), one of the principal purchasers of our CMTS product. In March 2005, we sold certain cable modem semiconductor assets to ATI Technologies, Inc. and terminated our internal semiconductor division.
 
In January 2006, we announced that the Company would focus solely on digital video product lines, and as a result, we discontinued our HAS product line. We determined that there were no short or long-term synergies between our HAS product line and digital video product lines which made the HAS products


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increasingly irrelevant given our core business of digital video. Though we continued to sell our remaining inventory of HAS products and CMTS products in 2006, the profit margins for our cable modems and eMTAs have continued to decrease due to competitive pricing pressures and the ongoing commoditization of the products.
 
Industry Dynamics
 
We participate in the worldwide market for equipment sold primarily to network operators, including cable operators, television broadcasters, telecom carriers and satellite providers. Our business is influenced by the following significant trends in our industry:
 
Migration of cable operators to all-digital networks
 
During the next several years, we believe that most North American and many foreign cable operators will continue to migrate their networks to all-digital operations in order to deliver new services and substantially improve network efficiency. Current efforts in this migration include digital simulcasting, which is a transition step to an all-digital network infrastructure. Digital simulcasting has been adopted by all major U.S. cable operators, as well as many second-tier cable operators in the United States. We further expect it to be adopted by additional second and third-tier operators in the U.S. and by major operators worldwide.
 
Ability to leverage network infrastructures to offer multiple products and services
 
Within the last few years, several cable operators and telecom carriers have begun offering a “triple play” bundle of services that includes video, voice and high-speed data over a single network. Their key objectives are to capture higher average revenues per subscriber, secure market share and reduce the “churn” of subscribers. The delivery of “triple play” services has led to increased competition between the cable operators and telecom carriers. This competition has led network operators to upgrade their infrastructure by purchasing equipment that allows them to provide the “triple play” of services.
 
Delivering digital video services is a key area of growing competition between cable operators and telecom carriers. Verizon and AT&T, the two largest telecom carriers in the U.S., are currently rolling out digital video services in select cities nationwide. We believe that as telecom carriers expand their digital video service rollouts, they will increasingly require products that have technology like our Network CherryPicker® products to generate advertising revenues. Additionally, we are currently working with Alcatel, Motorola, Inc. (Motorola), and other leading telecom equipment vendors which have been selected by several large telecom carriers to serve as systems integrators responsible for the carriers’ deployment of digital video services.
 
Network operators and content aggregators must combat ad skipping technologies
 
Consumers’ increasing use of digital video recorders (DVRs) capable of skipping over commercial advertisements is a growing threat to network operators and content aggregators, which face the possibility of lower advertising revenues from advertisers who pay in large part based on the number of viewers watching a program. To overcome the reduction of advertising viewers because of ad skipping DVRs, network operators and content aggregators are increasingly seeking solutions based on digital overlay techniques to directly insert ads into the program being aired. These “overlaid ads” typically appear in a lower corner of the television picture and cannot be skipped by DVRs since they appear within the TV program itself. This approach has already been proven by programmers such as SpikeTV and MTV, and we believe that network operators and content aggregators will increasingly rely on overlay techniques to maintain or even increase their advertising revenues.
 
Continued network investment to support new product requirements in competitive and emerging markets
 
The cable, digital broadcast satellite and telecom companies will continue their investments in equipment to provide advanced services in a cost-effective manner to increase average revenues per unit from their subscribers. According to Kagan Research, LLC, in 2006 U.S. cable operators spent $11.1 billion on infrastructure, compared to $10.6 billion in 2005, an increase of 5%. In addition, we believe that telecom


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carriers (in particular Verizon and AT&T) will become an increasing source of competition to traditional video service providers as they continue to upgrade their networks to offer video services, including high definition digital television (HDTV) services. While in the early stages, the development of a mobile video network is underway, and we expect that digital program insertion capabilities will play an important part in the growth of this emerging market.
 
Consolidation of the cable industry
 
In the late 1990s, U.S. cable operators began an unprecedented wave of consolidation, with several of the larger operators initiating aggressive growth strategies primarily through the acquisition of small, medium and large cable operators. Comcast Corporation (Comcast) — the largest U.S. operator today with more than 24 million subscribers — took the top spot in 2002 when it acquired AT&T Broadband, which had become the nation’s largest operator after acquiring TCI and MediaOne in 1999. In August 2006, Adelphia, formerly the fifth largest operator with approximately 4.8 million subscribers, was purchased by Comcast and Time Warner Cable (TWC). According to Kagan Research, LLC, as of September 2006, 58.6 million of the estimated 65.6 million cable subscribers in the U.S. are served by the top ten U.S. cable operators, representing more than 89% of the market. With fewer — but much larger — cable operators to sell to, cable equipment vendors must continue adding new products and services to win business.
 
This has led to a consolidation of cable equipment vendors seeking to expand their product lines and to strengthen relationships with key operators. For example, General Instrument Corporation and Scientific-Atlanta, Inc. (Scientific-Atlanta) were acquired by Motorola and Cisco Systems, Inc. (Cisco), respectively. Consolidation amongst smaller vendors has also taken place, including the acquisition of BroadBus Technologies, Inc. by Motorola; Arroyo Video Solutions, Inc. by Cisco; Entone, Inc.’s video networking software business by Harmonic, Inc. (Harmonic); nCUBE Corporation by C-COR Incorporated (C-Cor); Tandberg Television ASA by Ericsson; and BigBand Networks’ purchase of ADC Telecommunications, Inc.’s CMTS business.
 
The move towards localized and personalized content
 
The major U.S. cable operators are increasingly delivering more targeted, locally-relevant content to their subscribers as part of their long-term effort to deliver truly personalized content to individual subscribers. The current efforts include Video on Demand (VOD) in which programming is selected by the individual subscriber and transmitted whenever the subscriber requests it. Cable operators are also increasingly using digital advertising insertion to deliver locally relevant advertisements to their viewers.
 
The use of VOD services is growing amongst U.S. cable subscribers, with 54% of digital subscribers using the service during 2006, up from 49% in 2005 and 35% in 2004, according to the Cable & Telecommunications Association for Marketing. As the number of subscribers using VOD grows it will become increasingly important for cable operators to manage the bandwidth required to deliver these individual programs. Cable operators are also generating increasing revenues from delivering local advertising to their subscribers. In 2006, U.S. cable operators earned more than $5.0 billion carrying local advertising, an increase of 9% over the $4.6 billion billed in 2005, according to Kagan Research, LLC.
 
Business
 
We currently develop, market and sell digital video equipment, including our Network CherryPicker® digital video processing systems and our CP 7600 line of digital-to-analog decoders. Our products are sold to and used by cable, telecom, broadcast and satellite operators for multiple digital video applications, including the rate shaping of video content to maximize the bandwidth for SD and HD programming, grooming customized channel line-ups, carrying local ads for local and national advertisers, and branding themselves by inserting their corporate logos into their programming. In 2006, we continued to sell our remaining inventory of CMTS and HAS products, including cable modems and eMTAs, that we discontinued in January 2006. We expect to sell off our remaining inventory of CMTS and HAS products in 2007.


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The design of digital video processing equipment requires expertise in Motion Picture Experts Group (MPEG) digital video formats and Internet Protocol (IP). Our expertise in MPEG and IP, coupled with our experience in designing, developing and manufacturing complex equipment, has helped us secure a leadership position in statistical remultiplexing (rate shaping) which provides the cable and satellite operators with bandwidth management capabilities for their SD and HD digital video services and to support increased VOD usage. We believe we are well positioned to capitalize on the growing demand for network operators to provide advanced bandwidth intensive video services such as adding additional HDTV channels.
 
Our DVS products are designed to enable “localization on-demand,” or the delivery of on-demand, real-time video constructed to meet the advertising needs of local and regional markets. Further, we believe our digital video products enable network operators and content aggregators to more cost-effectively overlay advertisements directly into their programming. Our capabilities include advanced graphical overlay and SqueezeBack: cable operators can localize advertisements by overlaying graphics with locally relevant information (e.g., local store locations) or “squeeze back” the television image so that blank space appears on the bottom and/or sides of the screen into which similar relevant information can be inserted. This approach is more efficient compared to the traditional approach which requires the advertisements and the program to first be converted from digital to analog video, the insertion of the overlaid advertisements, and the subsequent re-encoding of the program and the advertisements back to digital. Since our method works entirely in the compressed digital domain, there is no need for decoders to convert the digital video to analog or for separate re-encoders to then convert the analog video back to digital. To complement our cable and satellite product offerings, we developed new software during 2006 for the DM 6400 model of our Network CherryPicker® line to support the new MPEG-4/AVC digital video format that most telecom carriers have chosen for their video services. Today, we continue to develop additional software applications for the Network CherryPicker® platform that enables our customers in cable, satellite and telecom to create advanced service solutions.
 
Business Strategy
 
Our goal is to be the leading provider of digital video products that enable network operators and content aggregators to more efficiently deliver digital video services to meet the needs of local and regional markets, thereby reducing costs and generating new revenues. To achieve this goal, we are pursuing the following strategies:
 
  •  capitalize on the increasing demand for advanced digital video services, including HDTV and video on demand, by leveraging our strengths in bandwidth management, ad insertion, grooming applications and products;
 
  •  continue to develop video applications with enhanced capabilities that meet the localization on-demand and personalized advertising needs of network operators, and to address emerging markets, such as mobile video;
 
  •  increase the distribution opportunities for our digital video products through reseller channels by developing new relationships and expanding existing system integration partnerships with partners such as Harmonic, Alcatel-Lucent and Motorola; and
 
  •  improve margins through focused product cost-reduction efforts and by streamlining operational activities across our product lines.
 
The ongoing migration of network operators to all-digital IP-based networks represents a significant opportunity for us with products and technologies that enable these operators to maximize their bandwidth and to manipulate their digital video content completely within the digital domain, which maximizes flexibility and reduces costs. We believe we are well positioned to capitalize on this expanding market in large part because of the success that our digital video products have had with the major U.S. cable operators and satellite providers.


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Products
 
Historically, we had multiple product lines that we sold to cable operators, satellite providers and telecom carriers. Our cable data product line consisted initially of a proprietary system composed of a CMTS and cable modems. We later expanded our cable data product line with standards-based offerings, including CMTS, cable modems and eMTA products meeting the DOCSIS and EuroDOCSIS specifications. We discontinued sales of our CMTS products in 2004 and our modems and eMTAs in 2006. Our cable data products were complemented by our Multigate voice-over-cable solution, which we inherited through our acquisition of Telegate Ltd. We discontinued the Multigate product line in 2004. Our telecom product line consisted of our Internet Protocol in the Loop or IPTL digital subscriber line access multiplexer, MainSail multi-service access platform and MiniPlex digitally added main line products, all of which we acquired through our acquisitions of Radwiz, MainSail Systems and the Access Network Electronics division of Tyco International. We discontinued these telecom products in 2003. Our Internet-over-satellite product line consisted of the SatStream system we inherited via our acquisition of ComBox. We discontinued our satellite product in 2002.
 
We continue to sell our digital video product lines, which currently consist of the Network CherryPicker® products and our CP 7600 digital-to-analog decoder. Our Network CherryPicker® line of digital video processing systems give cable, telecom and satellite operators flexibility in managing their digital video content, including the rate shaping of video content to maximize the bandwidth for SD and HD programming, grooming customized channel line-ups, carrying ads for local advertisers and branding themselves by inserting their corporate logos into their programming. To date, cable, satellite, television broadcasters and telecommunications providers have deployed more than 7,800 of our Terayon CherryPicker® and related digital video systems components.
 
Our Network CherryPicker® DM line is currently composed of two models, the DM 6400 and the DM 3200. Our DM 6400 helps cable operators seamlessly insert commercials for local advertisers into their digital programming. According to Kagan Research, LLC, in 2006, U.S. cable operators billed more than $5.0 billion running local advertisements, a 9% increase over the $4.6 billion billed in 2005. We believe this market will continue to grow and that we are well positioned in this space based on our current success in digital ad insertion and the relationships we have with the major advertising server companies, particularly SeaChange International, Inc. and C-Cor. Additionally, in February 2007 we added new graphic overlay and SqueezeBack capabilities to the DM 6400, enabling cable operators to further localize advertisements. The DM 6400 is also ideal for telecom carriers since it specifically supports the new MPEG-4/AVC digital video format most telecom carriers have chosen for their video services. Our DM 3200 provides statistical remultiplexing functionality and advanced stream processing capabilities for applications not requiring ad insertion.
 
Our CP 7600 digital-to-analog video decoder is used by cable operators to implement a “digital simulcast” architecture to improve the bandwidth efficiency of their networks. All major U.S. cable operators have adopted digital simulcasting and both second and third-tier operators are in the process of deploying the architecture. Prior to digital simulcasting, operators had to send all of their programming in both digital and analog formats to support both groups of subscribers. This traditional approach consumes enormous amounts of bandwidth within their networks. With simulcasting, operators now deliver just one set of programming digitally and use the CP 7600 at the ’edge’ of their networks (just before reaching the Hybrid Fiber Coaxial or HFC distribution network) to decode the programming to analog for their analog subscribers, and to pass the digital programming on to their digital subscribers untouched. This more bandwidth-efficient approach is an evolutionary step towards an architecture that is completely digital and IP-based and that will support the delivery of a new generation of services.
 
We are currently developing a next-generation platform to run our advanced digital video networking applications. This new platform will complement our existing Network CherryPicker® line, and will have considerably greater video stream processing power to support video service providers as they increase the amount of personalized and localized content they deliver to viewers.


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Product research and development
 
We maintain ongoing research and development activities for our digital video product line. Our research and development efforts are focused on developing new software applications and improved hardware platforms to address customer requirements across multiple industries while maintaining technological leadership. Another key goal is to improve the gross margins of our existing products by reducing their component and manufacturing costs.
 
Our research and development expense was $17.4 million for the year ended December 31, 2006 compared with $17.7 million and $33.2 million for the years ended December 31, 2005 and 2004, respectively. We currently anticipate that overall research and development spending in 2007 will remain constant compared to 2006, and will focus almost entirely on developing new hardware platforms and software applications for digital video solutions. Developing new and innovative solutions is important for us to remain competitive with larger companies that devote considerably more resources to product development.
 
Customers
 
We market and sell our digital video products to multiple vertical target markets consisting of the largest cable, satellite and telecom operators in North America.
 
Some of our principal customers and resellers include the following:
 
  •  Comcast;
 
  •  Cox Communications Inc. (Cox);
 
  •  TWC;
 
  •  EchoStar Communications Corporation; and
 
  •  Harmonic.
 
We believe that a substantial majority of our revenues will continue to be derived from sales to a relatively small number of customers located in the United States for the foreseeable future. Comcast and Harmonic accounted for approximately 20% and 15%, respectively, of our total revenue for the year ended December 31, 2006. Harmonic, Thomson Broadcast and Comcast accounted for approximately 12%, 11% and 10%, respectively, of our total revenue for the year ended December 31, 2005. For the year ended December 31, 2004, two customers, Adelphia and Comcast accounted for approximately 20% and 13%, respectively, of our total revenue. With the discontinuation of our data products, our sales have become increasingly concentrated in the United States and our presence outside the United States has decreased. A small percentage of our total digital video revenue has historically been derived from customers located outside the United States. We expect that trend will continue. The loss of any of our significant customers generally could have a material adverse effect on our business and results of operations.
 
Market Competition
 
The market for broadband equipment vendors is extremely competitive and is characterized by rapid technological change and, more recently, market consolidation. With our digital video products, we believe that we are currently the market leader in ad insertion, grooming and remultiplexing with our Network CherryPicker® line of digital video processing systems. However, several companies have entered this market, including Cisco through its acquisition of Scientific-Atlanta, Scopus Video Networks Ltd., BigBand Networks, RGB Networks, Inc. (RGB), SeaChange International, Inc., and Ericsson through its acquisition of Tandberg Television ASA. We believe that this increase in competition may lead to additional pricing pressures and declining gross margins.
 
The principal competitive factors in our market include the following:
 
  •  quality of product performance, features and reliability;
 
  •  customer technical support and service;


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  •  price;
 
  •  size and financial stability of operations;
 
  •  breadth of product line;
 
  •  sales and distribution capabilities;
 
  •  relationships with network operators and content aggregators; and
 
  •  meeting current or prospective industry or customer standards applicable to our products.
 
Many of our competitors and potential competitors are substantially larger and have significant advantages over us, including, without limitation:
 
  •  larger and more established selling and marketing capabilities;
 
  •  greater economies of scale;
 
  •  significantly greater financial, technical, engineering, marketing, distribution, customer support and other resources;
 
  •  greater name recognition and a larger installed base of customers; and
 
  •  well-established relationships with our existing and potential customers.
 
Some of the above competitive factors are outside of our control. Conditions in the market could change rapidly and significantly as a result of technological advancements. Additionally, there may be pressure to develop new or alternative industry standards and specifications for video products and applications. The broader adoption of any such standards and specifications would necessitate greater spending on developing new products. The development and market acceptance of new or alternative technologies could decrease the demand for our products or render them obsolete, and could impact the pricing and gross margin of our digital video products. Our competitors, many of which have greater resources than we do, may introduce products that are less costly, provide superior performance or achieve greater market acceptance than our products. These competitive pressures have impacted and are likely to continue to adversely impact our business.
 
Given these competitive and other market factors, we continually look for opportunities to compete effectively and create value for our stockholders. We may, at any time and from time to time, be in the process of identifying or evaluating product development initiatives, partnerships, strategic alliances or transactions and other alternatives in order to maintain market position and maximize shareholder value. Market and other competitive factors may cause us to change our strategic direction, and we may not realize the benefits of any such initiatives, partnerships, alliances or transactions. We cannot assure that any such initiatives, partnerships, alliances or transactions that we identify and pursue would actually result in our competing effectively, maintaining market position or increasing stockholder value. Our failure to realize any expected benefits from such initiatives, partnerships, alliances or transactions could negatively impact our financial position, results of operations, cash flows and stock price.
 
Sales and Marketing
 
We market and sell our products directly to network operators and content aggregators through our direct sales forces in North America and our limited sales forces in EMEA and Asia. We also market and sell our products through distributors, system integrators and resellers throughout the world and rely on this network to sell the majority of our products sold outside the United States.
 
We support our sales activities through marketing communication vehicles, such as industry press, trade shows, advertising and the Internet. Through our marketing efforts, we strive to educate network operators and content aggregators on the technological and business benefits of our products, as well as our ability to provide quality support and service. We participate in the major trade shows and industry events in the United States and limited events outside the United States. Industry referrals and reference accounts are significant marketing tools we develop and utilize.


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We also make our products available for customers to test, which is very often a prerequisite for making a sale of our more complex products. These tests can be comprehensive and lengthy, and can dramatically increase the sales cycle for these products. Participating in these tests often requires us to devote considerable time and resources from our engineering and customer support organizations.
 
International Sales
 
We have international sales offices in Brussels, Belgium and Tel Aviv, Israel. In the years ended December 31, 2006, 2005 and 2004, approximately 29%, 42% and 47%, respectively, of our net revenues were derived from customers outside of the United States. In January 2006, we announced that the Company would focus solely on digital video product lines. Digital video revenues outside the United States have been nominal, and we expect such revenues to increase slightly in 2007, but they will continue to constitute a small percentage of overall revenues. As a result, we expect the portion of our overall revenue generated from outside the United States to continue to decrease in 2007 as we will have limited sales of the existing inventory of our CMTS and HAS products, which historically made up a large portion of our international sales.
 
The majority of our international sales are currently invoiced in U.S. dollars. However, we do enter into certain transactions in Euros and other currencies. Invoicing in other currencies subjects us to risks associated with foreign exchange rate fluctuations. Although we do not currently have any foreign currency hedging arrangements in place, we will consider the need for hedging or other strategies to minimize these risks if the amount of invoicing in non-dollar denominated transactions materially increases.
 
Our international operations are subject to certain risks common to foreign operations in general, such as governmental regulations and import restrictions. In addition, there are social, political, labor and economic conditions in specific countries or regions, difficulties in staffing and managing foreign operations and potential adverse foreign tax consequences, among other factors, that could also have an adverse impact on our business and results of operations outside of the United States.
 
Customer Service and Technical Support
 
We believe that our ability to provide consistently high quality service and support will continue to be a key factor in attracting and retaining customers. Our technical services and support organization, with personnel in North America, Europe, Israel and Asia, offers support 24 hours a day, seven days per week. Prior to the deployment of our products, each customer’s needs are assessed and proactive solutions are implemented, including various levels of training, periodic management and coordination meetings and problem escalation procedures.
 
Backlog
 
We typically ship product and invoice customers shortly upon receipt of a purchase order as our customers typically request the immediate delivery of product. Assuming product availability, our practice is to ship our products promptly upon the receipt of purchase orders from our customers. We only have backlog if the product is not available to ship to the customer. Therefore, we have limited backlog and believe that backlog information is not material to an understanding of our business.
 
Manufacturing
 
Our digital video products are single sourced from a manufacturer in San Jose, California. Our HAS products, which were discontinued in January 2006, were single sourced from a manufacturer in China.
 
Our manufacturing operations employ semiconductors, electromechanical components and assemblies as well as raw materials such as plastic resins and sheet metal. Although we believe the materials and supplies necessary for our manufacturing operations are currently available in the quantities we require, we sometimes experience a shortage in the supply of certain component parts as a result of strong demand in the industry for those parts.


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Our subcontractors purchase materials, supplies and product subassemblies from a substantial number of vendors. For many of our products, there are existing alternate sources of supply. However, we sole source certain components contained in our products, such as the semiconductors used in our products. While this has not resulted in material disruptions in the past, should any change in these relationships or disruptions to our vendors’ operations occur, our business and results of operations could be adversely affected.
 
In an effort to prevent shortages of supplies used in the manufacturing process by our subcontractor, we source and inventory various raw products and components as part of our supply chain program. In doing so we may put ourselves at risk of carrying inventory that may become excessive based on our future sales failing to meet current sales forecasts or become obsolete before utilization by those manufacturers. We have recorded costs as a result of vendor cancellation charges.
 
Intellectual Property
 
We rely on a combination of patent, trade secret, copyright and trademark laws and contractual restrictions to establish and protect proprietary rights in our products. Even though we seek to establish and protect proprietary rights in our products, there are associated risks. Our pending patent applications may not be granted. Even if they are granted, the claims covered by the patent may be reduced from those included in our applications. Any patent might be subject to challenge in court and, whether or not challenged, might not be broad enough to prevent third parties from developing equivalent technologies or products without a license from us.
 
We have entered into confidentiality and invention assignment agreements with our employees and consultants, and we enter into non-disclosure agreements with many of our suppliers, distributors and customers so as to limit access to and disclosure of our proprietary information. These contractual arrangements, as well as statutory protections, may not prove to be sufficient to prevent misappropriation of our technology or deter independent third-party development of similar technologies. In addition, the laws of some foreign countries may not protect our intellectual property rights to the same extent as do the laws of the United States. Litigation may be necessary to enforce our intellectual property rights.
 
The development of standards or specifications is common in our industry, as is the contribution of intellectual property to associated intellectual property pools. For example, for our HAS products to be competitive, we were required to be compliant with the DOCSIS and the PacketCable standards. We entered into an agreement with Cable Television Laboratories, Inc. (CableLabs) whereby we licensed to CableLabs on a royalty-free basis all of our intellectual property rights to the extent that such rights may be asserted against a party desiring to design, manufacture or sell DOCSIS based products, including DOCSIS 2.0 based products. There may be pressure to develop new industry standards and specifications for video products and applications. Vendors like us may have to build products that meet these standards in order to sell to network operators.
 
The contractual arrangements, as well as statutory protections, we employ may not prove to be sufficient to prevent misappropriation of our technology or deter independent third-party development of similar technologies. We have in the past received and may in the future receive letters claiming that our technology infringes the intellectual property rights of others. We have consulted with our patent counsel for all such letters received and have or are in the process of reviewing the allegations made by such third parties. If these allegations were submitted to a court, the court could find that our products infringe third party intellectual property rights. If we are found to have infringed third party rights, we could be subject to substantial damages and/or an injunction preventing us from conducting our business. In addition, other third parties may assert infringement claims against us in the future. A claim of infringement, whether meritorious or not, could be time-consuming, result in costly litigation, divert our management’s resources, cause product shipment delays or require us to enter into royalty or licensing arrangements. These royalty or licensing arrangements may not be available on terms acceptable to us, if at all.
 
We pursue the registration of our trademarks in the United States and have applications pending to register several of our trademarks throughout the world. However, the laws of certain foreign countries might not protect our products or intellectual property rights to the same extent as the laws of the United States.


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Effective trademark, copyright, trade secret and patent protection may not be available in every country in which our products may be manufactured, marketed or sold.
 
Employees
 
As of December 31, 2006, we had 114 employees, of which 99 were located in the United States, and 15 were located outside the United States in Israel, Canada, Europe and Asia. We had 49 employees in research and development, 33 in marketing, sales and customer support, 16 in operations and 16 in general and administrative functions. None of our employees are represented by collective bargaining agreements. We believe that our relations with our employees are good.
 
Access to Our Reports
 
Our Internet Web site address is www.terayon.com. Our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (Exchange Act) are available free of charge through our Web site as soon as reasonably practicable after they are electronically filed with, or furnished to, the Securities and Exchange Commission (Commission). We will also provide those reports in electronic or paper form free of charge upon a request made to Mark A. Richman, Chief Financial Officer, c/o Terayon Communication Systems, Inc., 2450 Walsh Avenue, Santa Clara, CA 95051. Furthermore, all reports we file with the Commission are available free of charge via EDGAR through the Commission’s Web site at www.sec.gov. In addition, the public may read and copy materials filed by us at the Commission’s public reference room located at 100 F. Street, N.E., Washington, D.C., 20549 or by calling 1-800-SEC-0330.
 
Item 1A.   Risk Factors
 
The following is a summary description of some of the many risks we face in our business. You should carefully review the risks described below before making an investment decision. The risks and uncertainties described below are not the only ones facing us. Additional risks and uncertainties not presently known to us or that we currently deem immaterial also may impair our business operations. If any of the following risks actually occur, our business could be harmed. In such case, the trading price of our common stock could decline, and you may lose all or part of your investment. You should also consider the other information described in this report.
 
Risks Related to the Restatement
 
The restatement of our consolidated financial statements has had a material adverse impact on us, including increased costs, the delisting of our common stock from The NASDAQ Stock Market, the increased possibility of legal or administrative proceedings, and a default under our subordinated note agreement.
 
We determined that our consolidated financial statements for the years ended December 31, 2000, 2002, 2003 and 2004, and as of and for the quarters of 2004 and for the first two quarters of 2005, as described in more detail in our Annual Report on Form 10-K for the year ended December 31, 2005 filed on December 29, 2006 (2005 Form 10-K), should be restated. As a result of these events, we have become subject to a number of additional risks and uncertainties, including the following:
 
  •  We have incurred substantial unanticipated costs for accounting and legal fees in 2005 and 2006 in connection with the restatement. Although the restatement is complete, we expect to incur additional costs as indicated below.
 
  •  We face an increased risk of being subject to legal or administrative proceedings. In December 2005, the Securities and Exchange Commission (Commission) issued a formal order of investigation in connection with our accounting review of certain customer transactions. This investigation has diverted and will continue to divert more of our management’s time and attention and continue to cause us to


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  incur substantial costs. Such investigations can also lead to fines or injunctions or orders with respect to future activities, as well as further substantial costs and diversion of management’s time and attention.
 
  •  On June 23, 2006, a securities litigation lawsuit based on the events concerning the restatement was filed against us and certain of our current and former executive officers. On November 8, 2006, a new lead plaintiff was appointed in the case, and on January 8, 2007, the new lead plaintiff filed an amended complaint. On March 9, 2007, Terayon and the individual defendants filed a motion to dismiss the amended complaint. That motion is scheduled to be heard on June 5, 2007. The amended complaint was purportedly filed on behalf of all persons who purchased our common stock between June 28, 2001 and March 1, 2006, and it added several current and former officers and directors and our former accounting firm to the defendants named in the original complaint. The amended complaint incorporates the prior allegations and includes new allegations relating to the restatement of our consolidated historical financial statements as reported in our 2005 Form 10-K. In connection with this litigation and any further litigation that is pursued or other relief sought by persons asserting claims for damages allegedly resulting from or based on the restatement or events related thereto, we will incur defense costs that may include the amount of our deductible and defense costs exceeding our insurance coverage regardless of the outcome. Additionally, we may incur costs if the insurers of our directors and our liability insurers deny coverage for the costs and expenses related to any litigation.
 
Likewise, such events may divert our management’s time and attention away from the operation of the business. If we do not prevail in any such actions, we could be required to pay substantial damages or settlement costs.
 
  •  We were de-listed from The NASDAQ Stock Market because we were unable to file our periodic reports with the Commission on a timely basis. This failure was attributable to our inability to complete the restatement of our consolidated financial statements for prior periods. As previously disclosed on our Current Reports on Form 8-K filed on November 22, 2005 and January 20, 2006, NASDAQ notified us of its intention to de-list our common stock based on our failure to timely file our Quarterly Report on Form 10-Q for the quarter ended September 30, 2005, and our failure to solicit proxies and hold an annual shareholders’ meeting during 2005. On March 31, 2006, The NASDAQ Listing and Qualifications Panel determined to de-list our securities from The NASDAQ Stock Market effective as of the opening of business on April 4, 2006, and our common stock currently trades on the Pink Sheets. See our risk factor entitled “Our common stock has been de-listed from The NASDAQ Stock Market and trades on the Pink Sheets.” We may be unable to relist on The NASDAQ Stock Market or any other exchange because we may not be able to meet the applicable initial listing requirements.
 
  •  Because we were unable to timely file our Quarterly Report on Form 10-Q for September 30, 2005, we defaulted on our $500 million of 5% convertible subordinated notes (Notes) due August 2007. On March 21, 2006, we paid off the entire principal amount of outstanding Notes, including all accrued and unpaid interest and related fees, for a total of $65.6 million. As a result, our repayment of the Notes reduced our unrestricted cash, decreased our liquidity and could materially impair our ability to operate our business especially if we are unable to generate positive cash flow from operations.
 
  •  The restatement may also result in other negative ramifications, including the potential loss of confidence by suppliers, customers, employees, investors, and security analysts, the loss of institutional investor interest, fewer business development opportunities and delays in future earnings announcements, regulatory filings with the Commission and listing with a securities exchange.
 
Material weaknesses or deficiencies in our internal control over financial reporting could harm stockholder and business confidence in our financial reporting, our ability to obtain financing and other aspects of our business.
 
Maintaining an effective system of internal control over financial reporting is necessary for us to provide reliable financial reports. As described in Item 9A — Controls and Procedures of this Form 10-K, management, under the supervision of the Chief Executive Officer (CEO) and Chief Financial Officer (CFO), conducted an evaluation of disclosure controls and procedures. Based on that evaluation, the CEO and CFO


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concluded that our disclosure controls and procedures were not effective at a reasonable assurance level as of December 31, 2006 and as of the filing date of this Form 10-K due to the material weaknesses discussed below. Because the material weaknesses described below have not been remediated as of the filing date of this Form 10-K, the CEO and CFO continue to conclude that our disclosure controls and procedures are not effective as of the filing date of this Form 10-K. A material weakness in internal control over financial reporting is defined by the Public Company Accounting Oversight Board’s Audit Standard No. 2 as being a significant deficiency, or combination of significant deficiencies, that results in more than a remote likelihood that a material misstatement of the financial statements would not be prevented or detected. A significant deficiency is a control deficiency, or combination of control deficiencies, that adversely affects our ability to initiate, authorize, record, process, or report external financial data reliably in accordance with generally accepted accounting principles (GAAP) such that there is more than a remote likelihood that a misstatement of the annual or interim financial statements that is more than inconsequential will not be prevented or detected.
 
We were not able to fully execute the remediation plans that were established to address material weaknesses previously identified. As a result, the following material weaknesses were not fully remediated and remain ongoing as of December 31, 2006 and as of the date of this filing.
 
  •  insufficient controls related to the identification, capture and timely communication of financially significant information between certain parts of the organization and the accounting and finance department to enable these departments to account for transactions in a complete and timely manner;
 
  •  lack of sufficient personnel with technical accounting experience in the accounting and finance department and inadequate review and approval procedures to prepare external financial statements in accordance with GAAP;
 
  •  the use of estimates, including monitoring and adjusting balances related to certain accruals, reserves, and fixed assets;
 
  •  ineffective controls over the documentation, authorization and review of manual journal entries and ineffective controls to ensure the accuracy and completeness of certain general ledger account analysis and reconciliations conducted in connection with period end financial reporting.
 
For further information about these material weaknesses, please see Item 9A — Controls and Procedures — Management’s Report on Internal Control over Financial Reporting included in this Form 10-K. Because of these material weaknesses, management concluded that, as of December 31, 2006, our internal control over financial reporting was not effective.
 
Because we have concluded that our internal control over financial reporting is not effective and our independent registered public accountants issued an adverse opinion on the effectiveness of our internal controls, and to the extent we identify future weaknesses or deficiencies, there could be material misstatements in our consolidated financial statements and we could fail to meet our financial reporting obligations.
 
While we are in the process of implementing the remediation efforts described in Item 9A — Controls and Procedures — Remediation Steps to Address Material Weaknesses, we may continue to experience difficulties or delays in implementing measures to remediate the material weaknesses. Additionally, if the remedial measures are insufficient to address the identified material weaknesses or if additional material weaknesses or significant deficiencies in our internal controls are discovered in the future, we may fail to meet our future reporting obligations on a timely basis, our financial statements may contain material misstatements, our operating results may be harmed, and we may be subject to litigation.
 
Any failure to address the identified material weaknesses or any additional material weaknesses or significant deficiencies in our internal controls could also adversely affect the results of future management evaluations and auditor attestation reports regarding the effectiveness of our internal control over financial reporting that are required under Section 404 of the Sarbanes-Oxley Act of 2002.
 
Any material weakness or unsuccessful remediation could affect investor confidence in the accuracy and completeness of our financial statements. As a result, our ability to obtain any additional financing, or


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additional financing on favorable terms, could be materially and adversely affected, which, in turn, could materially and adversely affect our business, our strategic alternatives, our financial condition and the market value of our securities. In addition, perceptions of us among customers, lenders, investors, securities analysts and others could also be adversely affected. Current material weaknesses or any weaknesses or deficiencies identified in the future could also hurt confidence in our business and the accuracy and completeness of our financial statements, and adversely affect our ability to do business with these groups.
 
We can give no assurances that the measures we have taken to date, or any future measures we may take, will remediate the material weaknesses identified or that any additional material weaknesses will not arise in the future due to our failure to implement and maintain adequate internal controls over financial reporting. In addition, even if we are successful in strengthening our controls and procedures, those controls and procedures may not be adequate to prevent or identify irregularities or ensure the fair presentation of our financial statements included in our periodic reports filed with the Commission.
 
Our revenue recognition policy on digital video products has been corrected.
 
As more fully described in our 2005 Form 10-K, we now recognize revenue from our digital video products under Staff Accounting Bulletin (SAB) No. 101, “Revenue Recognition,” as amended by SAB No. 104 and SOP 97-2, “Software Revenue Recognition.” Our new revenue recognition policy under these accounting standards is complex. We rely upon key accounting personnel to maintain and implement the controls surrounding such policy. If the policy is not applied on a consistent basis or if we lose any of our key accounting personnel, the accuracy of our consolidated financial statements could be materially affected. This could cause future delays in our earnings announcements, regulatory filings with the Commission and potential delays in listing with a securities exchange.
 
Our common stock has been de-listed from The NASDAQ Stock Market and trades on the Pink Sheets.
 
Effective April 4, 2006, our common stock was delisted from The NASDAQ Stock Market and was subsequently quoted by the National Quotation Service Bureau (Pink Sheets). The trading of our common stock on the Pink Sheets may reduce the price of our common stock and the levels of liquidity available to our stockholders. In addition, the trading of our common stock on the Pink Sheets may materially and adversely affect our access to the capital markets, and the limited liquidity and reduced price of our common stock could materially and adversely affect our ability to raise capital through alternative financing sources on terms acceptable to us or at all. Stocks that trade on the Pink Sheets are no longer eligible for margin loans, and a company trading on the Pink Sheets cannot avail itself of federal preemption of state securities or “blue sky” laws, which adds substantial compliance costs to securities issuances, including pursuant to employee option plans, stock purchase plans and private or public offerings of securities. Our delisting from The NASDAQ Stock Market and quotation of our common stock on the Pink Sheets may also result in other negative ramifications, including the potential loss of confidence by suppliers, customers, employees, investors, and security analysts, the loss of institutional investor interest and fewer business development opportunities.
 
If we are not able to remain current with our filings with the Commission, we will face several adverse consequences.
 
If we are unable to remain current with our filings with the Commission and comply with the Commission’s reporting requirements, we will face several restrictions. We will not be able to have a registration statement under the Securities Act of 1933, covering a public offering of securities, declared effective by the Commission, or make offerings pursuant to existing registration statements; we will not be able to make an offering to any purchasers not qualifying as “accredited investors” under certain “private placement” rules of the Commission under Regulation D; we will not be eligible to use a “short form” registration statement on Form S-3 for a period of at least 12 months after the time we become current in our periodic and current reports under the Securities Exchange Act of 1934, as amended (Exchange Act); we will not be able to deliver the requisite annual report and proxy statement to our stockholders to hold our annual stockholders meeting; our employees cannot be granted stock options, nor are they able to exercise stock options registered on Form S-8, as Form S-8 is currently not available to us; and our common stock may not


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be eligible for re-listing on The NASDAQ Stock Market or alternative exchanges. These restrictions may impair our ability to raise funds in the public markets, should we desire to do so, and to attract and retain employees.
 
Risks Related to Our Business
 
We have a history of losses, may continue to incur losses in the future and may never achieve or maintain profitability.
 
We have incurred losses in each year since our inception. We began shipping products commercially in June 1997, and we have been shipping products in volume since the quarter ended March 31, 1998. As of December 31, 2006, we had an accumulated deficit of approximately $1.1 billion. We continue to be, and in future periods may remain, unable to generate sufficient cash flow from operations to fund our expenses. We believe that we will continue to experience challenges in selling our products at a profit and may continue to operate with net losses for the foreseeable future.
 
As a result of our losses, we have had to use available cash and cash equivalents to supplement the operation of our business. Additionally, we generally have been unable to significantly reduce our short-term expenses in order to compensate for unexpected decreases in anticipated revenues or delays in generating anticipated revenues. For example, we have fixed commitments with some of our suppliers that require us to purchase minimum quantities of their products at a specified price irrespective of whether we can subsequently use such quantities in our products. In addition, we have significant operating lease commitments for facilities and equipment that generally cannot be cancelled in the short-term without substantial penalties, if at all.
 
We depend on capital spending from the cable, satellite and telecommunications industries for our revenues, and any decrease or delay in capital spending in these industries would negatively impact our revenues, financial condition and cash flows.
 
Historically, a significant portion of our revenues have been derived from sales to cable television operators. Future demand for our products will depend on the magnitude and timing of capital spending by cable television operators, satellite operators, telecom companies and broadcasters for constructing and upgrading their systems. Customers view the purchase of our products as a significant and strategic decision. Digital video, movie and broadcast products are relatively complex and their purchase generally involves a significant commitment of capital. Our customers’ capital spending patterns are dependent on a variety of factors, including:
 
  •  Cable and satellite operators and telecom providers’ access to financing;
 
  •  Annual budget cycles, and the typical reduction in upgrade projects during the winter months;
 
  •  Discretionary customer spending patterns;
 
  •  Impact of industry consolidation and financial restructuring;
 
  •  Federal, local and foreign government regulation of telecommunications and television broadcasting, and regulatory approvals that our customers need to obtain;
 
  •  Overall demand for communication services and acceptance of new video, voice and data services;
 
  •  Evolving industry standards and network architecture;
 
  •  Delays associated with the evaluation of new services, new standards, and system architectures by cable and satellite operators and telecom providers;
 
  •  An emphasis on generating revenue from existing customers by operators instead of new construction or network upgrades;


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  •  The strategic focus of our customers and potential customers;
 
  •  Competitive pressures, including pricing pressures; and
 
  •  General economic conditions.
 
Financial and budgetary pressures on our existing and potential customers in the cable, satellite and telecom industries will adversely impact purchasing decisions and may cause delays in the purchase of our products. Any one of the above factors could impact spending by cable operators on digital video equipment and thus could impact our business and result in excess inventory, decreased sales and revenue or other adverse effects.
 
Due to the lengthy, complex and unpredictable sale cycle involved in the sale of our products, revenues forecasted for a particular period may not be realized, our financial results may vary and past results should not be relied on as an indication of future performance.
 
Our products have a lengthy, complex and unpredictable sales cycle that contributes to the uncertainty of our operating results. Factors that contribute to the lengthiness, complexity and unpredictability of the sales cycle for our products include:
 
  •  A significant commitment of capital and other resources by service providers;
 
  •  Delays frequently associated with large capital expenditures and implementation procedures within an organization;
 
  •  Substantial time required to engineer the deployment of new technologies or new video, voice and data services;
 
  •  Significant technical evaluations, including customer trials, of our products as well as competing products prior to making a purchasing decision; and
 
  •  Significant test marketing of new services to subscribers.
 
Moreover, the purchase of our digital video products typically requires coordination and agreement among a potential customer’s corporate headquarters and regional and local operations. Even if corporate headquarters agrees to purchase our products, local operations may retain a significant amount of autonomy and may not elect to purchase our products. Additionally, a portion of our expenses related to anticipated orders is fixed and is difficult to reduce or change, which may further impact our revenues and operating results for a particular period.
 
We expect that there will be fluctuations in the number and value of orders received. Because of the lengthy sales cycle and the size of customer orders, if orders forecasted for a specific customer for a particular period do not occur in that period, our revenues and operating results for that particular period could suffer. As a result, period-to-period comparisons of our results of operations are not necessarily meaningful, and these comparisons should not be relied upon as indications of future performance.
 
Our operating results are likely to fluctuate significantly and may fail to meet or exceed the expectations of securities analysts or investors or our guidance, causing our stock price to decline.
 
Our operating results have fluctuated and are likely to continue to fluctuate significantly in the future due to a number of factors, many of which we cannot control. For example, in the fourth quarter of 2006, DVS product revenues were higher than expected due to the accelerated purchasing by some of our telecom and cable customers that was originally expected to occur in the first quarter of 2007. As a result, our DVS product revenues in the first quarter of 2007 may be lower than expected as these customers deploy and integrate product purchased. Period-to-period comparisons of our operating results are not necessarily meaningful, and these comparisons should not be relied upon as indications of the future. Because these factors are difficult for us to forecast, our business, financial condition and results of operations from one period or a series of periods may be adversely affected and may be below the expectations of analysts and investors, resulting in a decrease in the market price of our common stock. Our business and product mix has


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also changed in the past several years based on our business restructuring, making historical comparisons more unreliable as indicators of future performance.
 
Factors that affect our revenues include, among others, the following:
 
  •  The sales cycle and timing of significant customer orders, which are dependent on the capital spending budgets of cable and satellite operators, telecom providers and other customers;
 
  •  Variations in the size of the orders by our customers and pricing concessions on volume sales;
 
  •  Competitive market conditions, including pricing actions by our competitors;
 
  •  New product introductions or the introduction of added features or functionality to products by competitors or by us;
 
  •  Delays in our introduction of new products, in our introduction of added features or functionality to our products, or our commercialization of products that are competitive in the marketplace;
 
  •  International conflicts, including the continuing conflict in Iraq, and acts of terrorism, and the impact of adverse economic, market and political conditions worldwide;
 
  •  The ability of our products to be qualified or certified as meeting industry standards and/or customer standards;
 
  •  Changes in market demand;
 
  •  Economic and financial conditions specific to the cable, satellite and telecom industries, and general economic conditions;
 
  •  Timing of revenue recognition on sales arrangements, which may include multiple deliverables;
 
  •  The amount and timing of sales to telecom companies, which are particularly difficult to predict;
 
  •  Changes in domestic and international regulatory environments;
 
  •  Market acceptance of new and existing products;
 
  •  The mix of our customer base, sales channels and our products sold;
 
  •  The level of international sales; and
 
  •  Delays in our receipt of, or cancellation of, orders forecasted by customers.
 
Our financial results are affected by the gross margin we achieve for the year relative to our gross revenues. A variety of factors influence our gross margin for a particular period, including, among others, the following:
 
  •  The sales mix of our products, the volume of products manufactured, and the average selling prices (ASPs) of our products;
 
  •  The costs of manufacturing our products;
 
  •  Delays in reducing the cost of our products and the effectiveness of our cost reduction measures;
 
  •  The type of distribution channel through which we sell our products; and
 
  •  Our ability to manage excess and obsolete inventory.
 
In addition, the nature of our customers’ budget cycle causes fluctuations in our quarterly operating results and could result in additional losses to investors. Recently, our operating results have been affected by our customers’ use of remaining budget at the end of their fiscal year to purchase equipment and accelerate build-out projects. We can provide no assurances that fluctuations in our quarterly operating results will diminish in the future.


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Our expenses for any given quarter are based on expected sales and if sales are below expectations, our operating results may be adversely impacted by our inability to adjust spending to compensate for the shortfall in revenue.
 
We often recognize a substantial portion of our revenues in the last month of the quarter. We establish our expenditure levels for product development and other operating expenses based on projected sales levels, and expenses are relatively fixed, particularly in the short term. For example, a significant percentage of these operating expenses are fixed due to operating leases for our facilities and equipment. Also, we have fixed commitments with some of our suppliers that require us to purchase minimum quantities of their products at a specified price. Because we have in the past been unable to use all of the products that we purchased from our suppliers, we have taken vendor cancellation charges as a result of these fixed commitments, and we may have to take additional charges in the future if we are unable to use all of the products that we purchase from our suppliers. As of December 31, 2006, $6.4 million of purchase obligations were outstanding. The obligations are generally expected to become payable at various times throughout 2007. Our expenses for any given quarter are typically based on expected sales and if sales are below expectations, our operating results may be adversely impacted by our inability to adjust spending to compensate for the shortfall.
 
Because our customer base is highly concentrated among a limited number of large customers, the loss of or reduced demand from these customers could have a material adverse effect on our business, financial condition and results of operations.
 
Our customers in the cable industry have undergone and continue to undergo significant consolidation in both North America and internationally, as a limited number of cable operators control an increasing number of systems. We expect this consolidation to continue in the foreseeable future. As of September 2006, the top ten U.S. Multiple System Operators (MSOs) (based on total subscribers) collectively served 58.6 million cable subscribers, which is approximately 89% of the total 65.6 million cable subscribers in the U.S., according to Kagan Research, LLC. The top 10 MSOs are Comcast Cable Communications; Time Warner Cable; Charter Communications, Inc.; Cox Communications, Inc.; Cablevision System Corporation; Bright House Networks LLC; Mediacom LLC; Suddenlink Communications; Insight Communications Company, Inc.; and CableOne. As a result of the consolidation among cable operators, our revenues from digital video products have been, and we expect that they will continue to be, highly concentrated among a limited number of large customers primarily located in the United States. Further business combinations may occur in our customer base that results in increased purchasing leverage by these customers over us. This may reduce the selling prices of our products and services and as a result may harm our business, financial condition and results of operations.
 
Typically, our sales are made on a purchase order or system contract basis, and none of our customers has entered into a long-term agreement requiring it to purchase our products. Moreover, we do not typically require our customers to purchase a minimum quantity of our products, and our customers can generally cancel or significantly reduce their orders on short notice without significant penalties. Our sales to these customers tend to vary significantly from year to year depending on the customer’s budget for capital expenditures and our new product introductions and improvements. A significant amount of our revenues will continue to be derived from a limited number of large customers. The loss of or reduced demand for products from any of our major customers could have a material adverse effect on our business, financial condition and results of operations. Also, we may not succeed in attracting new customers as many of our potential customers have pre-existing relationships with our current or potential competitors and the continued consolidation of the cable industry may also reduce the number of potential customers. To attract new customers and retain existing customers, we may be faced with price competition, which may adversely affect our gross margins and revenues.
 
A portion of our sales are made to a small number of resellers, who often incorporate our products and applications in systems that are sold to an end-user customer, which is typically a cable operator, satellite provider or broadcast operator. If one or more of these resellers develop their own products or elect to purchase similar products from another vendor, our ability to generate revenue and our results of operations may suffer.


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Our continued growth will depend on our ability to diversify our customer base and deliver products that help enable telecom companies to provide video services. If the projected growth in demand for video services from telecom companies does not materialize or if these service providers find alternative methods of delivering video services, future sales of our digital video products will be adversely impacted.
 
We are attempting to diversify our customer base beyond cable and satellite customers, principally into the telecom market, as well as the broadcast market. Major telecom companies have begun to implement plans to rebuild or upgrade their networks to offer bundled video, voice and data services. Although we have recently begun selling digital video products to telecoms in the fourth quarter of 2006, we will need to devote considerable resources to obtain orders, qualify our products and hire knowledgeable personnel to address telecom customers. If technological advancements allow these companies to provide video services without upgrading their current system infrastructure or provide more cost-effective methods of delivering video services than our products, sales of our digital video products will suffer. Even if these providers choose our products, they may not be successful in marketing video services to their customers, in which case additional sales of our products would likely be reduced. If we fail to penetrate the telecom market successfully, our growth in revenues and operating results would be correspondingly limited.
 
In order to be successful in this market, we may need to build alliances with integrators that sell telecom equipment to the telecom operators, adapt our products for telecom applications, adopt pricing specific to the telecom industry and the integrators that sell to the telecom operators, and build internal expertise to handle particular contractual and technical demands of the telecom industry. As a result of these and other factors, we cannot give any assurances that we will be able to increase our revenues from the telecom market, or that we can do so profitably, and any failure to generate revenues and profits from telecom customers could adversely affect our business, financial condition and results of operations.
 
The reductions in workforce associated with any restructuring efforts could disrupt the operation of our business, distract our management from focusing on revenue-generating efforts, result in the erosion of employee morale, and impair our ability to respond rapidly to growth opportunities in the future.
 
We have implemented a number of restructuring plans since 2001. The employee reductions and changes in connection with our restructuring activities, as well as any future changes in senior management and key personnel, could result in an erosion of morale, and affect the focus and productivity of our remaining employees, including those directly responsible for revenue generation and the management and administration of our accounting and finance department, which in turn may adversely affect our future revenues or cause other administrative deficiencies. Additionally, employees directly affected by the reductions may seek future employment with our business partners, customers or competitors. Although all employees are required to sign a proprietary information agreement with us at the time of hire, there can be no assurances that the confidential nature of our proprietary information will be maintained in the course of such future employment. Additionally, we may face wrongful termination, discrimination, or other claims from employees affected by the reductions related to their employment and termination. We could incur substantial costs in defending ourselves or our employees against such claims, regardless of the merits of such actions. Furthermore, such matters could divert the attention of our employees, including management, away from our operations, harm productivity, harm our reputation and increase our expenses. We cannot assure you that our restructuring efforts will be successful, and we may need to take additional restructuring efforts, including additional personnel reductions, in the future.
 
We are dependent on key personnel and we may face challenges in hiring and retaining qualified personnel due to the restatement.
 
Due to the specialized nature of our business, we are highly dependent on the continued service of and on our ability to attract and retain qualified senior management, accounting and finance, engineering, sales and marketing personnel and employees with significant experience and expertise in video, data networking and radio frequency design. The competition for some of these personnel is intense, particularly for engineers with Motion Picture Experts Group (MPEG), Internet Protocol (IP) and real time processing experience. Given the lengthy restatement process, it has become more difficult to attract and retain key personnel, and we may incur


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additional expenses in attempting to do so. We have experienced turnover in our accounting and finance organization and have augmented internal resources to address staffing deficiencies primarily through the engagement of external contractors. We previously used an outside accounting consulting firm to assist with the preparation of our financial statements, and we may not be able to prepare future financial statements without such outside accounting assistance.
 
There can be no assurances that the additional expenses we may incur, or our efforts to recruit and retain such individuals, will be successful. The loss of the services of any of our key employees, the inability to attract or retain qualified personnel in the future, or delays in hiring required personnel, could delay the development and introduction of, and negatively affect our ability to sell, our products. Additionally, we do not have key person insurance coverage for the loss of any of our employees. Any officer or employee can terminate his or her relationship with us at any time. Our employees generally are not bound by non-competition agreements. The loss of the services of any key personnel, or our inability to attract or retain qualified personnel could have a material adverse effect on our business, financial condition and results of operations.
 
Our future growth depends on developments in the digital video industry, on the adoption of new technologies and on several other industry trends.
 
Future demand for our products will depend significantly on the growing market acceptance of several emerging services, including digital video, high definition television (HDTV), video on demand, voice-over-IP, IP-based TV, ad insertion, and logo overlays. The effective delivery of these services will depend, in part, on a variety of new network architectures and standards, such as: FTTP and DSL networks designed to facilitate the delivery of video services by telecom operators; new video compression standards such as MPEG-4/H.264 and VC-1 for both standard and high definition services; the greater use of protocols such as IP; and the introduction of new consumer devices, such as advanced set-top boxes and DVRs. If adoption of these emerging services and/or technologies is not as widespread or as rapid as we expect, or if we are unable to develop new products based on these technologies on a timely basis, our net sales growth will be materially and adversely affected.
 
Furthermore, other technological, industry and regulatory trends will affect the growth of our business. These trends include the following:
 
  •  Convergence, or the desire of certain network operators to deliver a package of video, voice and data services to consumers, also known as the “triple play;”
 
  •  The use of digital video applications by businesses, governments and educators;
 
  •  The entry of telecom providers into the video business to allow them to offer the “triple play” purchase of services;
 
  •  Efforts by regulators and governments in the United States and abroad to encourage the adoption of broadband and digital technologies; and
 
  •  The extent and nature of regulatory attitudes towards such issues as competition between operators, access by third parties to networks of other operators, and local franchising requirements for telecom companies to offer video.
 
If, for instance, operators do not pursue the “triple play” or new video products and technology aggressively or in the timeline we expect, our ability to sell our digital video products and grow our revenues will be materially and adversely affected.
 
The markets in which we operate are characterized by rapidly changing technology, and we need to develop and introduce new and enhanced products in a timely manner to remain competitive.
 
The markets in which we operate are characterized by rapidly changing technologies, evolving industry standards, frequent new product introductions and relatively short product life. To compete successfully in these markets, we must design, develop, manufacture and sell new or enhanced products that provide


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increasingly higher levels of performance and reliability. Digital video markets are relatively immature, making it difficult to accurately predict the markets’ future growth rates, sizes or technological directions. In view of the evolving nature of these markets, network operators and content aggregators may decide to adopt alternative architectures, industry standards or technologies that are incompatible with our current or future video products and applications. The development and greater market acceptance of new architectures, industry standards or technologies could decrease the demand for our products or render them obsolete, and could negatively impact the pricing and gross margin of our digital video products. Our competitors, many of which have greater resources than we do, may introduce products that are less costly, provide superior performance or achieve greater market acceptance than our products. If we are unable to design, develop, manufacture and sell products that incorporate or are compatible with these new architectures, industry standards or technologies, our business and financial results will be materially and adversely impacted. Our ability to realize revenue growth depends on our ability to:
 
  •  Develop, in a timely manner, new products and applications that keep pace with developments in technology;
 
  •  Develop products that are cost effective;
 
  •  Meet evolving customer requirements;
 
  •  Enhance our current product and applications offerings; and
 
  •  Achieve market acceptance.
 
The pursuit of necessary technological advances and the development of new products and functionality require substantial time and expense. We may not be able to successfully develop or introduce new or enhanced products if they are not cost effective, are not brought to the market in a timely manner, are not in accordance with evolving industry standards and architecture, fail to achieve market acceptance, or are ahead of the market. If the technologies we are currently developing or intend to develop do not achieve feasibility or widespread market acceptance, our business will be materially and adversely impacted. In addition, in order to successfully develop and market certain of our current or future digital video products, we may be required to enter into technology development or licensing agreements with third parties. Failure to enter into development or licensing agreements, when necessary, could limit our ability to develop and market new products and could cause our operating results to suffer. The entry into such development or licensing agreements may not be on terms favorable to us and could negatively impact our gross margins.
 
Additionally, because of the lengthy sales cycle combined with a lengthy product development cycle, our customers may elect not to purchase our products or new features or functionality because they have elected to select alternate technologies or vendors. We may be unable to forecast the new products, features or functionality desired by our customers. We may spend considerable research and development dollars without having our products, features or functionality be accepted in the market. Because we are now focused solely on the development of digital video products, our inability to develop products, features and functionality that our customers might purchase would have an adverse impact on us, and would negatively affect our sales, revenue, margins and available cash for future development efforts.
 
Average selling prices of our digital video products may decline, which would materially and adversely affect our financial performance.
 
The ASPs for our digital video products may decline due to the introduction of new products, the adoption of new industry standards, the entry into licensing agreements, an increase in the number of competitors, competitive pricing pressures, promotional programs and customers possessing strong negotiating positions which require price reductions as a condition of purchase. The adoption of industry standards and specifications may erode ASPs on our digital video products if the adoption of such standards leads to the commoditization of products similar to ours. The entry into technology development or licensing agreements, as necessitated by industry developments and business needs, could also reduce our ASPs. Decreasing ASPs may also require us to sell our products at much lower gross margins than in the past, and could result in decreased revenues even if the number of units that we sell increases. We may experience substantial


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period-to-period fluctuations in future revenue, gross margin and operating results due to ASP erosion in our digital video products. Therefore, we must continue to develop and introduce on a timely basis and a cost-effective manner new products or next-generation products with enhanced functionalities that can be sold at higher gross margins. If we fail to do so, our revenues and gross margins may decline further.
 
We must achieve cost reductions or increase revenues to attain profitability.
 
In order to achieve profitability, we must significantly increase our revenues, continue to reduce the cost of our products, and reduce and control our operating expenses. In prior years, we experienced revenue declines which were, in large part, due to declining product ASPs resulting from our transition from a proprietary platform to the Data Over Cable System Interface Specification (DOCSIS) standards platform. Although we have implemented expense reduction and restructuring plans in the past that have focused on cost reductions and operating efficiencies, we continue to operate at a loss. A large portion of our expenses, including rent and operating lease expenditures, is fixed and difficult to reduce or change. Accordingly, if our revenue does not meet our expectations, we may not be able to adjust our expenses quickly enough to compensate for the shortfall in revenue which, in turn, could materially and adversely impact our business, financial condition and results of operations.
 
While we continue to work to reduce the cost of our products through design and engineering changes, we may not be successful in redesigning our products, and, even if we are successful, our efforts may be delayed or our redesigned products may contain significant errors and product defects. In addition, any redesign may not result in sufficient cost reductions to allow us to reduce significantly the prices of our products or improve our gross margins. Reduction in our product costs may require us to use lower-priced components that are highly integrated in future products and may require us to enter into high volume or long-term purchase or manufacturing agreements. Volume purchase or manufacturing agreements may not be available on acceptable terms, if at all, and we could incur significant expenses without related revenues if we cannot use the products or services offered by such agreements. We have incurred significant vendor cancellation charges related to volume purchases and manufacturing agreements in the past and may incur such charges in the future.
 
Our repayment of our Notes could adversely affect our financial condition, and we may not be able to raise additional funds to continue operating our business.
 
Our main source of liquidity continues to be our unrestricted cash and cash equivalents on hand. As a result of our history of operating losses, we expect to continue to use our unrestricted cash to fund operating losses in the future. Our unrestricted cash, cash equivalents and short-term investments totaled $20.3 million and $101.3 million as of December 31, 2006 and 2005, respectively. On March 21, 2006, we paid off the entire principal amount of the outstanding Notes due August 2007, including all accrued and unpaid interest thereon and related fees, for an aggregate amount of $65.6 million. Our repayment in full of the Notes reduced our unrestricted cash, decreased our liquidity and could materially impair our ability to operate our business, especially if we are unable to generate positive cash flow from operations.
 
If our operating losses are more severe than expected or continue longer than expected, we may find it necessary to seek other sources of financing to support our operations and to provide available funds for working capital. We may need to raise additional funds in order to support more rapid expansion, develop new or enhanced services, respond to competitive pressures, acquire complementary businesses or technologies or respond to unanticipated requirements. We may seek to raise additional funds through private or public sales of securities, strategic relationships, bank debt, and financing under leasing arrangements or otherwise. Based on our delay in filing our periodic reports due to the restatement, we are currently not eligible to use a “short-form” registration statement on Form S-3. If additional funds are raised through the issuance of equity securities, the percentage ownership of our current stockholders will be reduced, stockholders may experience additional dilution or such equity securities may have rights, preferences or privileges senior to those of the holders of our common stock. No assurances can be given that additional financing will be available on acceptable terms, if at all. If adequate funds are not available or are not available on acceptable terms, we may be unable to continue operations, develop our products, take advantage of future opportunities or respond to


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competitive pressures or unanticipated requirements, which could have a material adverse effect on our business, financial condition, operating results and liquidity.
 
Substantially all of our future revenue will be derived from the sale of our digital video products, and our operating results, financial conditions and cash flows will depend upon our ability to generate sufficient revenue from the sale of our digital video products.
 
In January 2006 we announced that we will focus solely on our digital video products and applications. We expect to sell off all remaining inventories from our discontinued HAS and CMTS product lines during 2007. Accordingly, we are susceptible to adverse trends affecting the digital video market segment, including technological obsolescence and the entry of new competition. We expect that this market may continue to account for substantially all of our revenue in the near future. As a result, our future success depends on our ability to continue to sell our digital video products and applications, the gross margin of such sales, our ability to maintain and increase our market share by providing other value-added services to the market, and our ability to successfully adapt our technology and services to other related markets. Markets for our existing services and products may not continue to expand and we may not be successful in our efforts to penetrate new markets.
 
We may be unable to provide adequate customer support.
 
Our ability to achieve our planned sales growth and retain current and future customers will depend in part upon the quality of our customer support operations. Our customers generally require significant support and training with respect to our products, particularly in the initial deployment and implementation stages. Spikes in demand of our support services may cause us to be unable to serve our customers adequately. We may not have sufficient personnel to provide the levels of support that our customers may require during initial product deployment or on an ongoing basis especially during peak periods. Our inability to provide sufficient support to our customers could delay or prevent the successful deployment of our products. In addition, our failure to provide adequate support could harm our reputation and relationships with our customers and could prevent us from selling products to existing customers or gaining new customers.
 
Furthermore, we may experience transitional issues relating to customer support in connection with our decision to dispose of or discontinue various investments and product lines. We may incur liability associated with customers’ dissatisfaction with the level of customer support maintained for discontinued product lines.
 
The deployment process for our equipment may be lengthy and may delay the receipt of new orders and cause fluctuations in our revenues.
 
The timing of deployment of our equipment can be subject to a number of other risks, including the availability of skilled engineering and technical personnel, the availability of other equipment such as fiber optic cable, and the need for local zoning and licensing approvals. The systems of our customers are both diverse and complex, and our ability to configure, test and integrate our systems with other elements of our customers’ networks is dependent upon technologies provided to our customers by third parties. The deployment and integration process can delay and impact the timing of our revenues. We believe that changes in our customers’ deployment plans have delayed, and may in the future delay, the receipt of new orders. Since the majority of our sales have been to relatively few customers, a delay in equipment deployment with any one customer could have a material adverse effect on our sales for a particular period.
 
We may have financial exposure to litigation.
 
We and/or our directors and officers are defendants in a number of lawsuits, including securities litigation lawsuits and patent litigation. See Item 3 — Legal Proceedings for more information regarding our litigation. As a result, we may have financial exposure to litigation as a defendant and because we are obligated to indemnify our officers and members of our Board of Directors for certain actions taken by our officers and directors on our behalf.


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In order to limit financial exposure arising from litigation and/or our obligation to indemnify our officers and directors, we have historically purchased directors’ and officers’ insurance (D&O Insurance). There can be no assurance that D&O Insurance will be available to us in the future or, if D&O Insurance is available, that it will not be prohibitively expensive.
 
If there is no insurance coverage for the litigation or, even if there is insurance coverage, if a carrier is subsequently liquidated or placed into liquidation, we will be responsible for the attorney fees and costs resulting from the litigation. The incurrence of significant fees and expenses in connection with the litigation could have a material adverse effect on our results of operations.
 
The loss of existing reseller and system integrator relationships or the failure to establish new relationships or strategic partnerships could have a material adverse effect on our business, financial conditions and results of operations.
 
Our products have been traditionally sold to large cable operators and satellite operators with recent, limited sales to television broadcasters and telecom companies. A portion of our sales are made to a small number of resellers and system integrators, who often incorporate our products and applications in systems that are sold to an end-user customer, which is typically a cable operator, satellite provider or broadcast operator. The resale relationships provide an opportunity to sell our products to our resellers’ customer bases. We rely upon these resellers for recommendations of our products during the evaluation stage of the purchasing process, as well as for implementation and customer support services. A number of our competitors also have strong relationships with the resellers. Although we intend to establish new strategic relationships with leading resellers worldwide to gain access to new customers, including telecom providers, we may not succeed in establishing these relationships. Even if we do establish and maintain these relationships, our resellers or strategic partners may not succeed in marketing our products to their customers. Some of our competitors have established long-standing relationships with cable, satellite and telecom operators that may limit our and our resellers’ ability to sell our products to those customers. Even if we were to sell our products to those customers, it would likely not be based on long-term commitments, and those customers would be able to terminate their relationships with us at any time without significant penalties. Our resellers or strategic partners may also terminate their relationship with us upon short notice without significant penalties.
 
Based on our sole focus on our digital video products, the reduction of our sales force, and our increasing focus on the telecom market, we are increasingly reliant on resellers and system integrators. In order to successfully market to telecom companies, we believe we will need to build alliances with system integrators that sell telecom equipment to the telecom operators. We may be unsuccessful in maintaining our current reseller and system integrator relationships as well as attracting system integrators that sell to telecom companies.
 
Some of our resellers and system integrators have sold in the past, and may sell in the future, products that compete with our products. The loss of existing reseller and system integrator relationships or the failure to establish new relationships or strategic partnerships could have a material adverse effect on our business, financial condition and results of operations.
 
We may fail to accurately forecast customer demand for our products, which could have a negative impact on our customer relationships and our revenues.
 
The nature of the broadband industry makes it difficult for us to accurately forecast demand for our products. Our inability to forecast accurately the actual demand for our products may result in too much or too little supply of products or an over/under capacity of manufacturing or testing resources at any given point in time. The existence of any one or more of these situations could have a negative impact on our business, operating results or financial condition. We have incurred significant vendor cancellation charges related to volume purchase and manufacturing agreements in the past and may incur such charges in the future. We had purchase obligations of approximately $6.4 million as of December 31, 2006, primarily to purchase minimum quantities of materials and components used to manufacture our products. We may be obligated to fulfill these purchase obligations even if demand for our products is lower than we anticipate.


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Forecasting to meet our customers’ demand is particularly difficult for our products. Our ability to meet customer demand will depend significantly on the availability of our single contract manufacturer. In recent years, in response to lower sales and falling ASPs, we significantly reduced our headcount and other expenses. As a result, we may be unable to respond to customer demand that increases more quickly than we expect. If we fail to meet customers’ supply expectations, our sales would be adversely affected and we may lose key customer relationships.
 
We may not be able to manage expenses and inventory risks associated with meeting the demand of our customers.
 
From time to time, we receive indications from our customers as to their future plans and requirements to ensure that we will be prepared to meet their demand for our products. If actual orders differ materially from these indications, our ability to manage inventory and expenses may be affected. If we enter into purchase commitments to acquire materials, or expend resources to manufacture products and such products are not purchased by our customers, our business and operating results could suffer.
 
Although we generally do not have long term supply agreements with our customers and have limited backlog of orders for our products, we must maintain or have available sufficient inventory levels to satisfy anticipated demand on a timely basis. Maintaining sufficient inventory levels to ensure prompt delivery of our products increases the risk of inventory obsolescence and associated write-offs, which could harm our business, financial conditions and results of operations.
 
We are dependent on a key third-party manufacturer and any failure of our manufacturer could materially adversely affect our financial condition and operating results.
 
Our products are single sourced from a manufacturer in San Jose, California. Any interruption in the operations of our manufacturer could adversely affect our ability to meet our scheduled product deliveries to customers. If we experience delays or quality control problems or any failure from our current manufacturer, we may be unable to supply products in a timely manner to our customers. While we believe that there are alternative manufacturers available, we believe that the procurement from alternative suppliers could take several months. In addition, these alternative suppliers may not be able to supply us products that are functionally equivalent, or make our products available to us on a timely basis or on similar terms. Resulting delays, quality control problems or reductions in product shipments could materially and adversely affect on our financial performance, damage customer relationships, and expose us to potential damages that may arise from our inability to supply our customers with products. Further, a significant increase in the price of underlying components, such as our semiconductor components, could harm our gross margins or operating results. There may not be manufacturers that are able to meet our future volume or quality requirements at a price that is favorable to us. Any financial, operational, production or quality assurance difficulties experienced by our single manufacturer could harm our business and financial results.
 
Additionally, we attempt to limit this risk by maintaining safety stocks of these components, subassemblies and modules. As a result of this investment in inventories, we have in the past been and in the future may be subject to risk of excess and obsolete inventories, which could harm our business. In this regard, our gross margins and operating results could be adversely affected by excess and obsolete inventory.
 
Our products are assembled and tested by our single manufacturer using testing equipment that we provide. As a result of our dependence on the contract manufacturer for the assembly and testing of our products, we do not directly control product delivery schedules or product quality. Any product shortages or quality assurance problems could increase the costs of manufacturing, assembling or testing our products. In addition, as manufacturing volume increases, we will need to procure and assemble additional testing equipment and provide it to our contract manufacturer. The production and assembly of testing equipment typically require significant lead times. We could experience significant delays in the shipment of our products if we are unable to provide this testing equipment to our contract manufacturers in a timely manner.


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We are dependent upon international sales and there are many risks associated with international operations, any of which could harm our financial condition and results of operations.
 
We are dependent upon international sales, even though we expect sales to customers outside of the United States to represent a significantly smaller percentage of our revenues for the foreseeable future compared to our historical revenues. For the years ended December 31, 2006, 2005 and 2004, approximately 29%, 42% and 47%, respectively, of our net revenues were from customers outside of the United States. We may be unable to maintain or increase international sales of our products. International sales are subject to a number of risks, including the following:
 
  •  Changes in foreign government regulations and communications standards;
 
  •  Import and export license requirements, tariffs and taxes, trade barriers and trade disputes;
 
  •  The uncertainty of laws and enforcement in certain countries relating to the protection of intellectual property;
 
  •  Difficulty in complying with environmental laws;
 
  •  Difficulty in collecting accounts receivable and longer payment cycles for international customers than those for customers in North America;
 
  •  Currency and exchange rate fluctuations;
 
  •  The burden of complying with a wide variety of foreign laws, treaties and technical standards;
 
  •  Difficulty in staffing and managing foreign operations;
 
  •  Specific social, political, labor and economic conditions, and political and economic changes in international markets; and
 
  •  Multiple and possibly overlapping tax structures and potentially adverse tax consequences.
 
One or more of these factors may have a material adverse effect on our future operations and consequently, on our business, financial conditions and operating results.
 
While we generally invoice our foreign sales in U.S. dollars, we invoice some of our sales in Europe in Euros and local currency in other countries. Since we have also elected to take payment from our customers in local currencies and may elect to take payment in other foreign currencies in the future, we are exposed to losses as the result of foreign currency fluctuations. We currently do not engage in foreign currency hedging transactions. We may in the future choose to limit our exposure by the purchase of forward foreign exchange contracts or through similar hedging strategies. No currency hedging strategy can fully protect against exchange-related losses. In addition, if the relative value of the U.S. dollar in comparison to the currency of our foreign customers should increase, the resulting effective price increase of our products to our foreign customers could result in decreased sales. If our customers are affected by currency devaluations or general economic downturns, their ability to purchase our products could be reduced significantly.
 
We are subject to regulation by U.S. and foreign governments and qualification requirements by non-governmental agencies. If we are unable to obtain and maintain regulatory qualifications for our existing and future products, our financial results may be adversely affected.
 
The cable, satellite and telecom industries are subject to extensive regulation in the United States and in foreign countries, which may affect the sale of our products and the growth of our business domestically and internationally. The growth of our business and our financial performance depend in part on regulations in these industries. Our products are also subject to qualification, clearance, and approval in certain countries, and we cannot make any assurances that we will be able to maintain these qualifications, clearances or approvals in all the countries in which we operate. If we do not comply with the applicable regulatory requirements in each of the jurisdictions where our products are sold, we may be subject to regulatory enforcement actions which could require us to, among other things, cease selling our products.


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We are subject to the Foreign Corrupt Practices Act (FCPA) and other laws which prohibit improper payments or offers of payments to foreign governments and their officials and political parties by U.S. and other business entities for the purpose of obtaining or retaining business. We make sales in countries known to experience corruption. Our sales activities in such countries create the risk of unauthorized payments or offers of payments by one of our employees, consultants, sales agents or distributors which could be in violation of various laws including the FCPA, even though such parties are not always subject to our control. We have attempted to implement safeguards to prevent losses from such practices and to discourage such practices by our employees, consultants, sales agents and distributors. However, our safeguards may prove to be less than effective and our employees, consultants, sales agents or distributors may engage in conduct for which we might be held responsible. Violations of the FCPA may result in severe criminal or civil sanctions, and we may be subject to other liabilities, which could adversely affect our business, financial condition and results of operations.
 
Furthermore, foreign countries may decide to prohibit, terminate or delay the construction of new infrastructure or the adoption of new technology for a variety of reasons. These reasons include environmental issues, economic downturns, availability of favorable pricing for other communications services and the availability and cost of related equipment. Regulations dealing with access by competitors to the networks of incumbent operators could slow or stop additional construction or expansion of these operators. Increased regulation of our customers’ pricing or service offerings could limit their investments and consequently the sale of our products. Changes in regulations could have an adverse impact on our business and financial results.
 
The markets in which we operate are intensely competitive and many of our competitors are larger and more established.
 
The markets for digital video products and applications are extremely competitive and have been characterized by rapid technological changes. Competitors vary in size and in the scope and breadth of the products and services they offer. Our current competitors include Scopus Video Networks Ltd.; RGB Networks, Inc.; BigBand Networks; Cisco Systems, Inc. through its acquisition of Scientific-Atlanta, Inc.; SeaChange International, Inc.; and Ericsson through its acquisition of Tandberg Television ASA. Competitors who could enter into the digital video applications and products market include larger and more established players such as Motorola, Inc. and Alcatel-Lucent. Companies that have historically not had a large presence in digital video applications and products market have recently begun to expand their market share through mergers and acquisitions. Further, our competitors may bundle their products or incorporate functionality into existing products in a manner that discourages users from purchasing our products or which may require us to lower our selling prices resulting in lower gross margins. Consolidation in the industry also may result in larger competitors that may have significant combined resources with which to compete against us. We also face competition from early stage companies with access to significant financial backing that seek to improve existing technologies or develop new technologies. Increased competition could result in reductions in price and revenues, lower profit margins, loss of customers and loss of market share. Any one of these factors could materially and adversely affect our business, financial condition and operating results.
 
The principal competitive factors in our market include the following:
 
  •  Product performance, features and reliability;
 
  •  Price;
 
  •  Size and stability of operations;
 
  •  Breadth of product line;
 
  •  Sales and distribution capabilities;
 
  •  Technical support and service;
 
  •  Relationships with network operators and content aggregators; and


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  •  Compliance with industry standards.
 
Many of our competitors and potential competitors are substantially larger and have significant advantages over us, including, without limitation:
 
  •  Larger and more established selling and marketing capabilities;
 
  •  Greater economies of scale;
 
  •  Significantly greater financial, technical, engineering, marketing, distribution, customer support and other resources;
 
  •  Greater name recognition and a larger installed base of customers; and
 
  •  Well-established relationships with our existing and potential customers.
 
Our competitors and potential competitors may be in a better position to withstand any significant reduction in capital spending by customers in these markets or to reduce selling prices for competitive reasons. They often have broader product lines and market focus and may not be as susceptible to downturns in a particular market. Many of our competitors and potential competitors have been in operation longer than we have and therefore have more long-standing and established relationships with domestic and foreign customers. In addition, many of our competitors manufacture their products in countries where the cost of production is significantly lower than in California, where we produce most of our products, thus enabling them to offer competitively lower prices for their products.
 
If any of our competitors’ products or technologies were to become the industry standard, our business could be seriously harmed. If our competitors are successful in bringing these products to market earlier, or if these products are more technologically capable than ours, then our sales could be materially and adversely affected. Our competitors may be in a stronger position to respond quickly to new or emerging technologies and changes in customer requirements. Our competitors may also be able to devote greater resources to the development, promotion and sale of their products and services than we can. Accordingly, we may not be able to maintain or expand our revenues if competition increases and we are unable to respond effectively.
 
Given these competitive and other market factors, we continually look for opportunities to compete effectively and create value for our stockholders. We may, at any time and from time to time, be in the process of identifying or evaluating product development initiatives, partnerships, strategic alliances or transactions and other alternatives in order to maintain market position and maximize shareholder value. Market and other competitive factors may cause us to change our strategic direction, and we may not realize the benefits of any such initiatives, partnerships, alliances or transactions. We cannot assure you that any such initiatives, partnerships, alliances or transactions that we identify and pursue would actually result in our competing effectively, maintaining market position or increasing stockholder value. Our failure to realize any expected benefits from such initiatives, partnerships, alliances or transactions could negatively impact our financial position, results of operations, cash flows and stock price.
 
Our business is subject to the risks of warranty returns, product liability and product defects.
 
Products like ours are very complex and can frequently contain undetected errors or failures, especially when first introduced or when new versions are released. Despite testing, errors may occur. Product errors could affect the performance or interoperability of our products, delay the development or release of new products or new versions or upgrades of products, and adversely affect our reputation, our customers’ willingness to buy products from us, and market acceptance and perception of our products. Any such errors or delays in releasing new products or new versions or upgrades of products or allegations of unsatisfactory performance could cause us to lose revenue or market share, increase our service costs, cause us to incur substantial costs in redesigning the products, subject us to liability for damages and divert our resources from other tasks, any one of which could materially and adversely affect our business, results of operations and financial condition. Although we have limitation of liability provisions in our standard terms and conditions of sale, they may not be effective as a result of federal, state or local laws or ordinances or unfavorable judicial decisions in the United States or other countries. The sale and support of our products also entails the risk of


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product liability claims. We maintain insurance to protect against certain claims associated with the use of our products, but our insurance coverage may not adequately cover any claim asserted against us. In addition, even claims that ultimately are unsuccessful could result in our expenditure of funds in litigation and divert management’s time and other resources.
 
We may be unable to adequately protect or enforce our intellectual property rights.
 
We rely on a combination of patent, trade secret, copyright and trademark laws and contractual restrictions to establish and protect proprietary rights in our products. Even though we seek to establish and protect proprietary rights in our products, there are risks. There are no assurances that any patent, trademark, copyright or other intellectual property rights owned by us will not be invalidated, circumvented or challenged, that such intellectual property rights will provide competitive advantages to us or that any of our pending or future patent applications will be issued with the scope of the claims sought by us, if at all. There are no assurances that others will not develop technologies that are similar or superior to our technology, duplicate our technology, or design around the patents that we own. In addition, effective patent, copyright and trade secret protection may be unavailable or limited in certain foreign countries in which we do business or may do business in the future.
 
Our pending patent applications may not be granted. Even if they are granted, the claims covered by any patent may be reduced from those included in our applications. Any patent might be subject to challenge in court and, whether or not challenged, might not be broad enough to prevent third parties from developing equivalent technologies or products without a license from us.
 
We believe that the future success of our business will depend on our ability to translate the technological expertise and innovation of our employees into new and enhanced products. We have entered into confidentiality and invention assignment agreements with our employees, and we enter into non-disclosure agreements with many of our suppliers, distributors and appropriate customers so as to limit access to and disclosure of our proprietary information. These contractual arrangements, as well as statutory protections, may not prove sufficient or effective to prevent misappropriation of our technology, trade secrets or other proprietary information or deter independent third-party development of similar technologies. In addition, the laws of some foreign countries may not protect our intellectual property rights to the same extent as do the laws of the United States. We may, in the future, take legal action to enforce our patents and other intellectual property rights, to protect our trade secrets, to determine the validity and scope of the proprietary rights of others, or to defend against claims of infringement or invalidity. Such litigation could result in substantial costs and diversion of resources and could negatively affect our business, operating results, financial position and liquidity.
 
We pursue the registration of our trademarks in the United States and have applications pending to register several of our trademarks throughout the world. However, the laws of certain foreign countries might not protect our products or intellectual property rights to the same extent as the laws of the United States. Effective trademark, copyright, trade secret and patent protection may not be available in every country in which our products may be manufactured, marketed or sold.
 
Our use of open source and third-party software could impose limitations on our ability to commercialize our products.
 
We incorporate open source software into our products, including certain open source code which is governed by the GNU General Public License, Lesser GNU General Public License and Common Development and Distribution License. The terms of many open source licenses have not been interpreted by U.S. courts, and there is a risk that these licenses could be construed in a manner that could impose unanticipated conditions or restrictions on our ability to commercialize our products. In such event, we could be required to seek licenses from third parties in order to continue offering our products, make generally available, in source code form, proprietary code that links to certain open source modules, re-engineer our products, discontinue the sale of our products if re-engineering could not be accomplished on a cost-effective


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and timely basis, or become subject to other consequences, any of which could adversely affect our business, operating results and financial condition.
 
We may also find that we need to incorporate certain proprietary third-party technologies, including software programs, into our products in the future. However, licenses to relevant third-party technology may not be available to us on commercially reasonable terms, if at all. Therefore, we could face delays in product releases until alternative technology can be identified, licensed or developed, and integrated into our current products. These delays, if they occur, could materially adversely affect our business, operating results and financial condition.
 
Third party claims of infringement or other claims against us could adversely affect our ability to market our products, require us to redesign our products or seek licenses from third parties, and seriously harm our operating results and disrupt our business.
 
The industry in which we operate is characterized by vigorous protection of intellectual property rights, which on occasion have resulted in significant and often protracted litigation. As is typical in our industry, we have been and may from time to time be notified of claims asserting that we are infringing intellectual property rights owned by third parties. We also have in the past agreed to, and may from time to time in the future agree to, indemnify customers of our technology or products for claims against such customers by a third party based on claims that our technology or products infringe patents of that third party. Currently, in the cable industry, there is industry-wide patent litigation involving the DOCSIS standard and certain video technologies. Our customers have been sued for using certain DOCSIS complaint products and video products, including our products. Our customers have requested indemnity pursuant to the terms and conditions of our sales to them, and we are contributing to the legal fees and costs of these litigations. Additionally, we may have further liability under indemnity obligations if there is a settlement or judgment. Please see Item 3 — Legal Proceedings for additional information.
 
We further believe that companies may be increasingly subject to infringement claims as distressed companies and individuals attempt to generate cash by enforcing their patent portfolio against a wide range of products. These types of claims, meritorious or not, may result in costly and time-consuming litigation; divert management’s attention and other resources; require us to enter into royalty arrangements; subject us to significant damages or injunctions restricting the sale of our products; require us to indemnify our customers for the use of the allegedly infringing products; require us to refund payment of allegedly infringing products to our customers or to forgo future payments; require us to redesign certain of our products; invalidate our proprietary rights; or damage our reputation. Although we carry general liability insurance, our insurance may not cover potential claims of this type and may not be adequate to indemnify us for all liability that may be imposed. Our failure to obtain a license for key intellectual property rights from a third party for technology used by us could cause us to incur substantial liabilities and prevent us from manufacturing and selling products utilizing the technology. Alternatively, we could be required to expend significant resources to develop non-infringing technology with no assurances that we would be successful in such endeavors. The occurrence of any of the above events could materially and adversely affect our business, results of operations and financial condition.
 
We are exposed to the credit risk of our customers and to credit exposures in weakened markets, which could result in material losses.
 
Most of our sales are on an open credit basis. Payment terms in the United States are typically 30 to 60 days, and because of local customs or conditions, longer in some markets outside the United States. Beyond our open credit arrangements, we have also experienced a request for customer financing and facilitation of leasing arrangements, which we have not provided to date and do not expect to provide in the future. We expect demand for enhanced open credit terms, for example, longer payment terms, customer financing and leasing arrangements, to continue and believe that such arrangements are a competitive factor in obtaining business. Our decision not to provide these types of financing arrangements may adversely affect our ability to sell products, and therefore, our revenue, operations and business.


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Because of current conditions in the global economy, our exposure to credit risks relating to sales on an open credit basis has increased. Although we monitor and attempt to mitigate the associated risk, there can be no assurance that our efforts will be effective in reducing credit risk. Additionally, there have been significant insolvencies and bankruptcies among our customers, which have caused and may continue to cause us to incur economic and financial losses. There can be no assurance that additional losses would not be incurred and that such losses would not be material. Although these losses have generally not been material to date, future losses, if incurred, could harm our business and have a material adverse effect on our operating results and financial condition.
 
We have and we may seek to expand our business through acquisitions which could disrupt our business operations and harm our operating results.
 
In order to expand our business, we may make strategic acquisitions of other companies or certain assets. We plan to continue to evaluate opportunities for strategic acquisitions from time to time, and may make an acquisition at some future point. However, the current volatility in the stock market and the current price of our common stock may adversely affect our ability to make such acquisitions. Any acquisition that we make involves substantial risks, including the following:
 
  •  Difficulties in integrating the operations, technologies, products and personnel of an acquired company;
 
  •  Diversion of management’s attention from normal daily operations of the business;
 
  •  Potential difficulties in completing projects associated with in-process research and development;
 
  •  Difficulties in entering markets in which we have no or limited direct prior experience and where competitors in such markets have stronger market positions;
 
  •  Initial dependence on unfamiliar supply chains or relatively small supply partners;
 
  •  Insufficient revenues to offset increased expenses associated with acquisitions; and
 
  •  The potential loss of key employees of the acquired companies.
 
Acquisitions may also cause us to:
 
  •  Issue common stock that would dilute our current stockholders’ percentage ownership;
 
  •  Assume liabilities;
 
  •  Record goodwill and non-amortizable intangible assets that will be subject to impairment testing and potential periodic impairment charges;
 
  •  Incur amortization expenses related to certain intangible assets;
 
  •  Incur large and immediate write-offs; or
 
  •  Become subject to litigation.
 
For example, we made ten acquisitions during the period between 1999 and 2000. Due to various economic conditions, none of the products from our acquired businesses, other than the digital video products, have achieved the level of market acceptance that was forecasted at the time of their acquisitions. Additionally, certain product groups have not achieved the level of technological development needed to be marketable or to expand the market. Mergers and acquisitions of high-technology companies are inherently risky, and no assurance can be given that our future acquisitions will be successful and will not materially adversely affect our business, operating results or financial condition. Failure to manage and successfully integrate acquisitions we make could materially harm our business and operating results. Even when an acquired company has already developed and marketed products, there can be no assurance that product enhancements will be made in a timely fashion or that all pre-acquisition due diligence will have identified all possible issues that might arise with respect to such products.


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Our products are subject to safety approvals and certifications.
 
In the United States, our products are required to meet certain safety requirements. For example, we are required to have our video products certified by Underwriters Laboratory in order to meet federal requirements. Outside the United States, our products are subject to the regulatory requirements of each country in which the products are manufactured or sold. These requirements are likely to vary widely. We may be unable to obtain on a timely basis, or at all, the regulatory approvals that may be required for the manufacture, marketing and sale of our products.
 
Compliance with current and future environmental regulations may be costly which could impact our future earnings.
 
We may be subject to environmental and other regulations due to our production and marketing of products in certain states and countries. In addition, we could face significant costs and liabilities in connection with product take-back legislation, which enables customers to return a product at the end of its useful life and charges us with financial and other responsibility for environmentally safe collection, recycling, treatment and disposal. We also face increasing complexity in our product design and procurement operations as we adjust to new and upcoming requirements relating to the materials composition of our products, including the restrictions on lead and certain other substances in electronics that apply to specified electronics products put on the market in the European Union as of July 1, 2006 (Restriction of Hazardous Substances in Electrical and Electronic Equipment Directive (EU RoHS). The European Union has also finalized the Waste Electrical and Electronic Equipment Directive (WEEE), which makes producers of electrical goods financially responsible for specified collection, recycling, treatment and disposal of past and future covered products. The deadline for enacting and implementing this directive by individual European Union governments was August 13, 2004 (WEEE Legislation), although extensions were granted in some countries. Producers became financially responsible under the WEEE Legislation beginning in August 2005. Other countries, such as the United States, China and Japan, have enacted or may enact laws or regulations similar to the EU RoHS or WEEE Legislation. Other environmental regulations may require us to reengineer our products to utilize components which are more environmentally compatible. Such reengineering and component substitution may result in additional costs to us. Although we currently do not anticipate any material adverse effects based on the nature of our operations and the effect of such laws, there is no assurance that such existing laws or future laws will not have a material adverse effect on us.
 
We are subject to import/export controls, and various import/export licensing requirements could materially and adversely affect our business or require us to significantly modify our current business practices.
 
Our products are subject to U.S. export controls and may be exported outside the United States only with the required level of export license or through an export license exception, in most cases because we incorporate encryption technology into our products. In addition, various countries regulate the import of certain encryption technology and have enacted laws that could limit our ability to distribute our products or could limit our customers’ ability to implement our products in those countries. We may have to make certain filings with the U.S. and foreign governments in order to obtain permission to export certain of our products. In the past, we may have inadvertently failed to file certain import/export applications and notices, and we may have to make certain filings and request permission to continue exportation of any affected products without interruption while these applications are pending. If we do have to make such filings, there are no assurances that we will obtain permission to continue exporting the affected products or that we will obtain any required import/export approvals now or in the future. If we do not receive the required import/export approvals, we may be unable to ship those products to certain customers located outside of the United States. In addition, we may be subject to fines or other penalties due to the failure to file certain import/export applications and notices.
 
Changes in our products or changes in export and import regulations may create delays in the introduction of our products in international markets, prevent our customers with international operations from deploying our products throughout their global systems or, in some cases, prevent the export or import of our products to certain countries altogether. Any change in export or import regulations or related legislation, shift in approach


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to the enforcement or scope of existing regulations, or change in the countries, persons or technologies targeted by such regulations, could result in decreased use of our products by, or in our decreased ability to export or sell our products to, existing or potential customers internationally.
 
In addition, we may be subject to customs duties and export quotas, which could have a significant impact on our revenue and profitability. While we have not encountered significant difficulties in connection with the sales of our products in international markets, the future imposition of significant increases in the level of customs duties or export quotas could have a material adverse effect on our business.
 
Changes in telecommunications legislation and regulations could harm our prospects and future sales.
 
Changes in telecommunications legislation and regulations in the United States and other countries could affect the sales of our products. In particular, regulations dealing with access by competitors to the networks of incumbent operators could slow or stop additional construction or expansion by these operators. Local franchising and licensing requirements may slow the entry of telecom companies into the digital video business. Increased regulation of our customers’ pricing or service offerings could limit their investments and consequently the sales of our products. Changes in regulations could have a material adverse effect on our business, operating results, and financial condition.
 
Compliance with changing laws and regulations relating to corporate governance and public disclosure has resulted, and will continue to result, in the incurrence of additional expenses.
 
New and changing laws and regulations, including the Sarbanes-Oxley Act of 2002, new Commission regulations and NASDAQ Stock Market Rules, impose stricter corporate governance requirements, greater disclosure obligations, and greater focus on disclosure and internal controls. These new laws and regulations have had the effect of increasing the complexity and cost of our Company’s corporate governance compliance, diverting the time and attention of our management from revenue-generating activities to compliance activities, and increasing the risk of personal liability for our board members and executive officers involved in our Company’s corporate governance process. Our efforts to comply with evolving laws and regulations have resulted, and will continue to result, in increased general and administrative expenses, and increased professional and independent auditor fees. In addition, it has become more difficult and expensive for us to obtain director and officer liability insurance.
 
In order to meet the new corporate governance and financial disclosure obligations, we have been taking, and will continue to take, steps to improve our controls and procedures, including disclosure and internal controls, and related corporate governance policies and procedures to address compliance issues and correct any deficiencies that we may discover. Our efforts to correct the deficiencies in our disclosure and internal controls have required, and will continue to require, the commitment of significant financial and managerial resources. In addition, the costs associated with the continued testing and remediation of our internal controls have been significant and material in the year ended December 31, 2006, and we anticipate that such costs may continue to be material in future years as these controls are maintained and continually evaluated and tested.
 
Furthermore, changes in our operations and the growth of our business may require us to modify and expand our disclosure controls and procedures, internal controls and related corporate governance policies. In addition, the new and changed laws and regulations are subject to varying interpretations in many cases due to their lack of specificity, and as a result, their application in practice may evolve over time as new guidance is provided by regulatory and governing bodies. If our efforts to comply with new or changed laws and regulations differ from the conduct intended by regulatory or governing bodies due to ambiguities or varying interpretations of the law, we could be subject to regulatory sanctions, our reputation may be harmed and our stock price may be adversely affected.


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Recent and proposed regulations related to equity compensation could adversely affect earnings, our ability to raise capital and affect our ability to attract and retain key personnel.
 
Since our inception, we have used stock options as a fundamental component of our employee compensation packages. We believe that our stock option plans are an essential tool to link the long-term interests of stockholders and employees, especially executive management, and serve to motivate management to make decisions that will, in the long run, give the best returns to stockholders. The Financial Accounting Standards Board announced changes to GAAP that required us to record a charge to earnings for employee stock option grants and employee stock purchase plan rights for all future periods beginning on January 1, 2006. In the event that the assumptions used to compute the fair value of our stock-based awards are later determined to be inaccurate or if we change our assumptions significantly in future periods, our stock-based compensation expense and results of operations could be materially affected which could impede any capital raising efforts. Additionally, to the extent that new accounting standards make it more difficult or expensive to grant options to employees, we may incur increased compensation costs, change our equity compensation strategy or find it difficult to attract, retain and motivate employees, each of which could materially and adversely affect our business.
 
New privacy laws and regulations or changing interpretations of existing laws and regulations could harm our business.
 
Governments in the United States and other countries have adopted laws and regulations regarding privacy and advertising that could impact important aspects of our business. In particular, governments are considering new limitations or requirements with respect to our customers’ collection, use, storage and disclosure of personal information for marketing purposes. Any legislation enacted or regulation issued could dampen the growth and acceptance of addressable advertising which is enabled by our products. If the use of our products to increase advertising revenue is limited or becomes unlawful, our business, results of operations and financial condition would be harmed.
 
Our stock price has been and is likely to continue to be highly volatile.
 
The market price of our common stock has fluctuated significantly in the past and is likely to fluctuate in the future. Investors may be unable to resell our common stock at or above their purchase price. In the past, companies that have experienced volatility in the market price of their stock have been subject to securities class action litigation.
 
Our stock price could be subject to extreme fluctuations in response to a variety of factors, including the following:
 
  •  Actual or anticipated variations in quarterly operating results;
 
  •  Announcements of technological innovations;
 
  •  New products or services offered by us or our competitors;
 
  •  Changes in financial estimates by securities analysts;
 
  •  Conditions or trends in the broadband services and technologies industry;
 
  •  Changes in the economic performance and/or market valuations of technology, Internet, online service or broadband service industries;
 
  •  Announcement of significant acquisitions, strategic partnerships, joint ventures or capital commitments, by us or our current or potential competitors;
 
  •  Adoption of industry standards and the inclusion or compatibility of our technology with such standards;
 
  •  Adverse or unfavorable publicity regarding us or our products;
 
  •  Additions or departures of key personnel;


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  •  Sales of common stock; and
 
  •  Other events or factors that may be beyond our control.
 
In addition, the stock markets in general, including the Pink Sheets and The NASDAQ Stock Market, and the stock price of broadband services and technology companies in particular, have experienced extreme price and volume volatility. This volatility and decline have affected many companies irrespective of or disproportionately to the operating performance of these companies. Additionally, industry factors may materially adversely affect the market price of our common stock.
 
We have adopted a stockholder rights plan, which, together with provisions in our charter documents and Delaware law, may delay or prevent an acquisition of us, which could decrease the value of our stock.
 
We adopted a stockholder rights plan pursuant to which we distributed one right for each outstanding share of common stock held by our stockholders of record as of February 20, 2001. If our Board of Directors believes that a particular acquisition is undesirable, the rights may substantially dilute the stock ownership of a person or group attempting a take-over of us, even if such a change in control is beneficial to our stockholders. As a result, the plan could make it more difficult for a third party to acquire us, or a significant percentage of our outstanding capital stock, without first negotiating with our Board of Directors.
 
Provisions of our Certificate of Incorporation and our Bylaws could make it more difficult for a third party to acquire control of us in a transaction not approved by our Board of Directors. We are also subject to the anti-takeover provisions of Section 203 of the Delaware General Corporation Law. Any provision of our Certificate of Incorporation, Bylaws, stockholder rights plan or Delaware law that has the effect of delaying or preventing a change in control could limit the opportunity for our stockholders to receive a premium for their shares of our common stock.
 
We rely on complex information technology systems and networks to operate our business. Any significant system or network disruption could have a material adverse impact on our operations, sales and financial performance.
 
We rely on the efficient and uninterrupted operation of complex information technology systems and networks. All information technology systems are potentially vulnerable to damage or interruption from a variety of sources, including but not limited to computer viruses, security breach, energy blackouts, natural disasters, terrorism, war and telecommunication failures. There also may be system or network disruptions if new or upgraded business management systems are defective or are not installed properly. We have implemented various measures to manage our risks related to system and network disruptions, but a system failure or security breach could negatively impact our operations and financial results. In addition, we may incur additional costs to remedy the damages caused by these disruptions or security breaches.
 
We, our sole manufacturer and our customers are vulnerable to earthquakes, disruptions to power supply, labor issues and other unexpected events.
 
Our corporate headquarters, the majority of our research and development activities and our sole source manufacturer are located in California, an area known for seismic activity. An earthquake, or other significant natural disaster, could result in an interruption in our business or the operations of our manufacturer. Some of the other locations in which we and our customers conduct business are prone to natural disasters. If there is a natural disaster in any of the locations where our customers are located, we face the risk that our customers may incur losses or substantial business interruptions which may impair their ability to continue to purchase their products from us.
 
Our California operations may also be subject to disruptions in power supply, such as those that occurred in 2001. In addition, the cost of electricity and natural gas has risen significantly. Power outages could disrupt our business operations and those of our suppliers, and could cause us to fail to meet the commitments to our customers. Our business may also be impacted by labor issues related to our operations and/or those of our manufacturer, network operators and content aggregators, or customers. Such an interruption could harm our


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current and prospective business relationships and adversely impact our operating results. We may not carry sufficient business interruption insurance to compensate for any losses that we may sustain as a result of any natural disasters or other unexpected events. Disruptions in power supply, labor issues and other unexpected events impacting our customers may affect their purchasing decisions and thus adversely impact our financial performance.
 
SPECIAL NOTE ON FORWARD-LOOKING STATEMENTS
 
This Annual Report on Form 10-K contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 which are subject to the safe harbor created by those sections. All statements included or incorporated by reference in this report, other than statements that are purely historical in nature, are forward-looking statements. Forward-looking statements are generally written in the future tense and/or are preceded by words such as may, will, should, expect, plan, anticipate, believe, estimate, predict, future, intend, or certain or the negative of these terms or similar expressions to identify forward-looking statements. Forward-looking statements include, among other things, statements regarding:
 
  •  Our belief that our current cash balances will be sufficient to satisfy our cash requirements for at least the next 12 months;
 
  •  Our belief that we are well positioned to capitalize on the emerging digital video market because of the success our digital video products have had with the major U.S. cable operators and satellite providers, as well as our current success in digital ad insertion;
 
  •  Our belief that by focusing our business on higher margin digital video products, our margins may increase;
 
  •  Our belief that we are well positioned to capitalize on the growing demand for network operators to provide advanced video services to their subscribers;
 
  •  Our belief that the ongoing migration of network operators and content aggregators to all-digital networks represents a significant opportunity for companies similar to ours with products and technologies that enable our customers to maximize their bandwidth, to utilize important new transport methods and to deploy new services;
 
  •  Our belief that networks operators and content aggregators will increasingly rely on overlay to maintain or even increase their advertising revenues and that our digital video processing systems will enable them to do this more cost-effectively;
 
  •  Our belief that network operators will continue their investments in equipment to provide advanced services in a cost-effective manner to increase average revenues per unit from their subscribers;
 
  •  Our belief that there will be increasing competition to our digital video products, which may increase price competition and lead to decreased revenue and margins;
 
  •  Our expectation that research and development expenses will remain constant in 2007; and
 
  •  Our expectation that general and administrative expenses will decrease in 2007.
 
Forward-looking statements are not guarantees of future performance and involve risks and uncertainties, including those discussed in Item 1A of this Report. The forward-looking statements contained in this report are based on information that is currently available to us and expectations and assumptions that we deemed reasonable at the time the statements were made. We do not undertake any obligation to update any forward-looking statements in this report or in any of our other communications, except as required by law. All such forward-looking statements should be read as of the time the statements were made and with the recognition that these forward-looking statements may not be complete or accurate at a later date. The business risks discussed in Item 1A of this Report on Form 10-K, among other things, should be considered in evaluating our prospects and future financial performance.


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Item 1B.   Unresolved Staff Comments
 
Not applicable.
 
Item 2.   Properties
 
Our principal executive offices are located in Santa Clara, California, where we lease approximately 63,000 square feet under a lease that expires in September 2009. We sub-sublease approximately 141,000 square feet of space in Santa Clara, California under a sublease that expires in October 2009 with the sub-sublease expiring on the same date as the sublease. In the United States, we also leased an additional facility in Costa Mesa, California that was subleased; the lease expired in March 2006 and the sublease expired in September 2005.
 
In addition, we lease properties worldwide. We lease premises in Brussels, Belgium; Shanghai, China; Tel Aviv, Israel; and Seoul, Korea. We previously leased premises in Hong Kong and the lease expired in June 2006. We had a facility in Ottawa, Ontario, Canada that we subleased and the lease and sublease expired in June 2006. We had a facility lease in Tel Aviv, Israel that expired in February 2007 and we entered into a subsequent agreement whereby we rent space on a month-to-month basis. We believe that our existing facilities are adequate to meet our needs for the foreseeable future. For additional information regarding obligations under leases, see Note 4, “Commitments,” to Consolidated Financial Statements.
 
Item 3.   Legal Proceedings
 
Beginning in April 2000, several plaintiffs filed class action lawsuits in federal court against us and certain of our officers and directors. Later that year, the cases were consolidated in the United States District Court for the Northern District of California (Court) as In re Terayon Communication Systems, Inc. Securities Litigation. The Court then appointed lead plaintiffs who filed an amended complaint. In 2001, the Court granted in part and denied in part defendants’ motion to dismiss, and plaintiffs filed a new complaint. In 2002, the Court denied defendants’ motion to dismiss that complaint, which, like the earlier complaints, alleged that the defendants violated the federal securities laws by issuing materially false and misleading statements and failing to disclose material information regarding our technology. On February 24, 2003, the Court certified a plaintiff class consisting of those who purchased or otherwise acquired our securities between November 15, 1999 and April 11, 2000. On September 8, 2003, the Court heard defendants’ motion to disqualify two of the lead plaintiffs and to modify the definition of the plaintiff class. On September 10, 2003, the Court issued an order vacating the hearing date for the parties’ summary judgment motions, and, on September 22, 2003, the Court issued another order staying all discovery until further notice and vacating the trial date, which had been scheduled for November 4, 2003. On February 23, 2004, the Court issued an order disqualifying two of the lead plaintiffs and ordered discovery, which was conducted. In February 2006, we mediated the case with plaintiffs’ counsel. As part of the mediation, we reached a settlement of $15.0 million. After this mediation, our insurance carriers agreed to tender their remaining limits of coverage, and we contributed approximately $2.2 million to the settlement. On March 17, 2006, we, along with plaintiffs’ counsel, submitted the settlement to the Court and the shareholder class for approval. The Court held a hearing to review the settlement of the shareholder litigation on September 25, 2006. To date, the Court has not approved the settlement.
 
On October 16, 2000, a lawsuit was filed against us and the individual defendants (Zaki Rakib, Selim Rakib and Raymond Fritz) in the Superior Court of California, San Luis Obispo County. This lawsuit was titled Bertram v. Terayon Communication Systems, Inc. The factual allegations in the Bertram complaint were similar to those in the federal class action, but the Bertram complaint sought remedies under state law. Defendants removed the Bertram case to the United States District Court, Central District of California, which dismissed the complaint. Plaintiffs appealed this order, and their appeal was heard on April 16, 2004. On June 9, 2004, the United States Court of Appeals for the Ninth Circuit affirmed the order dismissing the Bertram case.
 
In 2002, two shareholders filed derivative cases purportedly on behalf of us against certain of our current and former directors, officers, and investors. (The defendants differed somewhat in the two cases.) Since the cases were filed, the investor defendants have been dismissed without prejudice, and the lawsuits have been


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consolidated as Campbell v. Rakib in the Superior Court of California, County of Santa Clara. We are a nominal defendant in these lawsuits, which allege claims relating to essentially the same purportedly misleading statements that are at issue in the securities class action filed in April 2000. In that securities class action, we disputed making any misleading statements. The derivative complaints also allege claims relating to stock sales by certain of the director and officer defendants. On September 15, 2006, we entered into a Stipulation of Settlement of Derivative Claims. On September 18, 2006, the Superior Court of California, County of Santa Clara approved the final settlement of the derivative litigation entitled In re Terayon Communication Systems, Inc. Derivative Litigation (Case No. CV 807650). In connection with the settlement, we paid $1.0 million in attorney’s fees and expenses to the derivative plaintiffs’ counsel and agreed to adopt certain corporate governance practices.
 
On June 23, 2006, a putative class action lawsuit was filed against us in the United States District Court for the Northern District of California by I.B.L. Investments Ltd. purportedly on behalf of all persons who purchased our common stock between October 28, 2004 and March 1, 2006. Zaki Rakib, Jerry D. Chase, Mark Richman and Edward Lopez are named as individual defendants. The lawsuit focuses on our March 1, 2006 announcement of the restatement of financial statements for the year ended December 31, 2004, and for the four quarters of 2004 and the first two quarters of 2005. On November 8, 2006, Adrian G. Mongeli was appointed lead plaintiff in the case, replacing I.B.L. Investments Ltd. On January 8, 2007, Mongeli filed an amended complaint, purportedly on behalf of all persons who purchased our common stock between June 28, 2001 and March 1, 2006. The amended complaint adds Ray Fritz, Carol Lustenader, Matthew Miller, Shlomo Rakib, Doug Sabella, Christopher Schaepe, Mark Slaven, Lewis Solomon, Howard W. Speaks, Arthur T. Taylor and David Woodrow as individual defendants, and also names Ernst & Young as a defendant. The amended complaint incorporates the prior allegations and includes new allegations relating to the restatement of our consolidated historical financial statements as reported in our Form 10-K filed on December 29, 2006. The plaintiffs are seeking damages, interest, costs and any other relief deemed proper by the court. An unfavorable ruling in this legal matter could materially and adversely impact our results of operations. On March 9, 2007, Terayon and the individual defendants filed a motion to dismiss the amended complaint. That motion is scheduled to be heard on June 5, 2007.
 
On April 22, 2005, we filed a lawsuit in the Superior Court of California, County of Santa Clara against Adam S. Tom (Tom) and Edward A. Krause (Krause) and a company founded by Tom and Krause, RGB Networks, Inc. (RGB). We sued Tom and Krause for breach of contract and RGB for intentional interference with contractual relations based on breaches of the Noncompetition Agreements entered into between us and Tom and Krause, respectively. On May 24, 2006, RGB, Tom, and Krause filed a Notice of Motion and Motion For Leave To File a Cross-Complaint, in which the defendants stated that they intended to file counter-claims against us for misappropriation of trade secrets, unfair competition, tortious interference with contractual relations, and tortious interference with prospective economic advantage. On July 6, 2006, the court granted the defendants’ motion, and on July 20, 2006, defendants filed a cross-complaint for misappropriation of trade secrets, unfair competition, tortious interference with contractual relations, and tortious interference with prospective economic advantage. On August 21, 2006, we filed a demurrer to certain of those claims. The court granted our demurrer as to RGB’s request for declaratory judgment. On November 9, 2006, we filed our answer to RGB’s complaint. On March 26, 2007, we entered into a stipulation for settlement with RGB amicably resolving all outstanding litigation between the parties.
 
On September 13, 2005, a case was filed by Hybrid Patents, Inc. (Hybrid) against Charter Communications, Inc. (Charter) in the United States District Court for the Eastern District of Texas for patent infringement related to Charter’s use of equipment (cable modems, cable modem termination systems (CMTS) and embedded multimedia terminal adapters (eMTAs)) meeting the Data Over Cable System Interface Specification (DOCSIS) standard and certain video equipment. Hybrid has alleged that the use of such products violates its patent rights. Charter has requested that we and others supplying it with equipment indemnify Charter for these claims. We and others have agreed to contribute to the payment of the legal costs and expenses related to this case and we have entered into a joint defense and cost sharing agreement with all named defendants in the suit. On May 4, 2006, Charter filed a cross-complaint asserting its indemnity rights against us and a number of companies that supplied Charter with cable modems. To date, this cross-complaint has not been


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dismissed. Trial is scheduled on Hybrid’s claims for July 2, 2007. At this point, the outcome is uncertain and we cannot assess damages. However, the case may be expensive to defend and there may be substantial monetary exposure if Hybrid is successful in its claim against Charter and then elects to pursue other cable operators that use the allegedly infringing products.
 
On July 14, 2006, a case was filed by Hybrid against Time Warner Cable (TWC), Cox Communications Inc. (Cox), Comcast Corporation (Comcast), and Comcast of Dallas, LP (together, the MSOs) in the United States District Court for the Eastern District of Texas for patent infringement related to the MSOs’ use of data transmission systems and certain video equipment. Hybrid has alleged that the use of such products violates its patent rights. To date, we have not been named as a party to the action. The MSOs have requested that we and others supplying them with cable modems and equipment indemnify the MSOs for these claims. We and others have agreed to contribute to the payment of legal costs and expenses related to this case and we have entered into a joint defense and cost sharing agreement with all named defendants in the suit. Trial is scheduled on Hybrid’s claims for July 2, 2007. At this point, the outcome is uncertain and we cannot assess damages. However, the case may be expensive to defend and there may be substantial monetary exposure if Hybrid is successful in its claim against the MSOs and then elects to pursue other cable operators that use the allegedly infringing products.
 
On September 16, 2005, a case was filed by Rembrandt Technologies, LP (Rembrandt) against Comcast in the United States District Court for the Eastern District of Texas alleging patent infringement. In this matter, Rembrandt alleged that products and services sold by Comcast infringe certain patents related to cable modem, voice-over internet, and video technology and applications. To date, we have not been named as a party in the action, but we have received a subpoena for documents and a deposition related to the products we sold to Comcast. We continue to comply with this subpoena. Comcast has made a request for indemnity related to the products that we and others sold to them. We and others have agreed to contribute to the payment of legal costs and expenses related to this case and we have entered into a joint defense and cost sharing agreement with all named defendants in the suit. On February 1, 2007, the Court entered an order disqualifying Rembrandt’s counsel and vacated all scheduled dates pending Rembrandt obtaining new counsel. At this point, the outcome is uncertain and we cannot assess damages. However, the case may be expensive to defend and there may be substantial monetary exposure if Rembrandt is successful in its claim against Comcast and then elects to pursue other cable operators that use the allegedly infringing products.
 
On June 1, 2006, a case was filed by Rembrandt against Charter, Cox, CSC Holdings, Inc. (CSC), and Cablevision Systems Corp. (Cablevision) in the United States District Court for the Eastern District of Texas alleging patent infringement. In this matter, Rembrandt alleged that products and services sold by Charter infringe certain patents related to cable modem, voice-over internet, and video technology applications. To date, we have not been named as a party in the action, but Charter has made a request for indemnity related to the products that we and others have sold to them. We have not received an indemnity request from Cox, CSC and Cablevision but we expect that such request will be forthcoming shortly. To date, we and others have not agreed to contribute to the payment of legal costs and expenses related to this case. Trial date of this matter is not known at this time. At this point, the outcome is uncertain and we cannot assess damages. However, the case may be expensive to defend and there may be substantial monetary exposure if Rembrandt is successful in its claim against Charter and then elects to pursue other cable operators that use the allegedly infringing products.
 
On June 1, 2006, a case was filed by Rembrandt against TWC in the United States District Court for the Eastern District of Texas alleging patent infringement. In this matter, Rembrandt alleged that products and services sold by TWC infringe certain patents related to cable modem, voice-over internet, and video technology applications. To date, we have not been named as a party in the action, but TWC has made a request for indemnity related to the products that we and others have sold to them. We and others have agreed to contribute to the payment of legal costs and expenses related to this case. Trial date of this matter is not known at this time. At this point, the outcome is uncertain and we cannot assess damages. However, the case may be expensive to defend and there may be substantial monetary exposure if Rembrandt is successful in its claim against TWC and then elects to pursue other cable operators that use the allegedly infringing products.


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On September 13, 2006, a second case was filed by Rembrandt against TWC in the United States District Court for the Eastern District of Texas alleging patent infringement. In this matter, Rembrandt alleged that products and services sold by TWC infringe certain patents related to the DOCSIS standard. To date, we have not been named as a party in the action, but TWC has made a request for indemnity related to the products that we and others have sold to them. We and others have agreed to contribute to the payment of legal costs and expenses related to this case. Trial date of this matter is not known at this time. At this point, the outcome is uncertain and we cannot assess damages. However, the case may be expensive to defend and there may be substantial monetary exposure if Rembrandt is successful in its claim against TWC and then elects to pursue other cable operators that use the allegedly infringing products.
 
On February 2, 2007, a case was filed by GPNE Corp. (GPNE) against Time Warner Inc. (TWI), Comcast and Charter in the United States District Court for the Eastern District of Texas alleging patent infringement. In this matter, GPNE alleged that products and services sold by TWI, Comcast and Charter infringe certain patents related to the DOCSIS standard (data transmission). To date, we have not been named as a party in the action, but TWI has made a request for indemnity related to the products that we and others have sold to them. We believe that Comcast and Charter will also make indemnity requests. We and others have agreed to contribute to the payment of legal costs and expenses related to this case. Trial date of this matter is not known at this time. On February 2, 2007, TWC filed a lawsuit against GPNE in the United States District Court for the District of Delaware requesting a declaratory judgment of non-infringement. At this point, the outcome is uncertain and we cannot assess damages. However, the case may be expensive to defend and there may be substantial monetary exposure if GPNE is successful in its claim against TWI, Comcast and Charter and then elects to pursue other cable operators that use the allegedly infringing products.
 
We have received letters claiming that our technology infringes the intellectual property rights of others. We have consulted with our patent counsel and reviewed the allegations made by such third parties. If these allegations were submitted to a court, the court could find that our products infringe third party intellectual property rights. If we are found to have infringed third party rights, we could be subject to substantial damages and/or an injunction preventing us from conducting our business. In addition, other third parties may assert infringement claims against us in the future. A claim of infringement, whether meritorious or not, could be time-consuming, result in costly litigation, divert our management’s resources, cause product shipment delays or require us to enter into royalty or licensing arrangements. These royalty or licensing arrangements may not be available on terms acceptable to us, if at all.
 
Furthermore, we have in the past agreed to, and may from time to time in the future agree to, indemnify a customer of our technology or products for claims against the customer by a third party based on claims that its technology or products infringe intellectual property rights of that third party. These types of claims, meritorious or not, can result in costly and time-consuming litigation, divert management’s attention and other resources, require us to enter into royalty arrangements, subject us to damages or injunctions restricting the sale of our products, require us to indemnify our customers for the use of the allegedly infringing products, require us to refund payment of allegedly infringing products to its customers or to forgo future payments, require us to redesign certain of our products, or damage our reputation, any one of which could materially and adversely affect our business, results of operations and financial condition.
 
We may, in the future, take legal action to enforce our patents and other intellectual property rights, to protect our trade secrets, to determine the validity and scope of the proprietary rights of others, or to defend against claims of infringement or invalidity. Such litigation could result in substantial costs and diversion of resources and could negatively affect our business, results of operations and financial condition.
 
In December 2005, the Commission issued a formal order of investigation in connection with our accounting review of a series of contractual arrangements with Thomson Broadcast. These matters were previously the subject of an informal Commission inquiry. We have been cooperating fully with the Commission and will continue to do so in order to bring the investigation to a conclusion as promptly as possible.
 
We are currently a party to various other legal proceedings, in addition to those noted above, and may become involved from time to time in other legal proceedings in the future. While we currently believe that


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the ultimate outcome of these proceedings, individually and in the aggregate, will not have a material adverse effect on our financial position or overall results of operations, litigation is subject to inherent uncertainties. Were an unfavorable ruling to occur in any of our legal proceedings, there exists the possibility of a material adverse impact on our financial condition and results of operations for the period in which the ruling occurs. The estimate of the potential impact on our financial position and overall results of operations for any of the above legal proceedings could change in the future.
 
Item 4.   Submission of Matters to a Vote of Security Holders
 
There were no matters submitted to a vote of security holders during the year ended December 31, 2006.
 
PART II
 
Item 5.   Market for the Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities
 
(a) Prior to April 4, 2006, our common stock was traded on The NASDAQ Stock Market under the symbols “TERN” and “TERNE.” Our common stock was delisted from The NASDAQ Stock Market on April 4, 2006 and currently is quoted on the Pink Sheets under the symbol “TERN.PK.” The following table sets forth, for the periods indicated, the high and low per share sale prices of our common stock as reported on the Pink Sheets and on The NASDAQ Stock Market, for the respective periods.
 
                 
    High     Low  
 
Year Ended December 31, 2006
               
First Quarter(1)
  $ 2.91     $ 1.63  
Second Quarter(2)
  $ 2.24     $ 1.18  
Third Quarter
  $ 1.38     $ 0.74  
Fourth Quarter
  $ 2.25     $ 0.94  
Year Ended December 31, 2005
               
First Quarter(1)
  $ 3.73     $ 1.99  
Second Quarter(1)
  $ 3.78     $ 2.52  
Third Quarter(1)
  $ 4.10     $ 2.91  
Fourth Quarter(1)
  $ 3.95     $ 1.97  
 
 
(1) Reflects trading on The NASDAQ Stock Market.
 
(2) Reflects trading on The NASDAQ Stock Market from April 1, 2006 to April 3, 2006.
 
(a) As of March 9, 2007, the closing price of our common stock on the Pink Sheets was $2.07.
 
(b) As of March 9, 2007, there were approximately 504 holders of record of our common stock, as shown on the records of our transfer agent. The number of record holders does not include shares held in “street name” through brokers.
 
(c) We have not declared or paid any cash dividends on our common stock. We currently expect to retain future earnings, if any, for use in the operation and expansion of our business and do not anticipate paying any cash dividends in the foreseeable future.


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(d) The following table provides certain information about our common stock that may be issued under our equity compensation plans as of December 31, 2006. Information is included for both equity compensation plans approved by our stockholders and equity compensation plans not approved by our stockholders.
 
                         
                Common Stock
 
                Available for Future
 
    Common Stock
          Issuance Under
 
    to be Issued
    Weighted Average
    Equity Compensation
 
    Upon Exercise of
    Exercise Price of
    Plans (Excluding
 
    Outstanding Options
    Outstanding Options
    Securities Reflected
 
    and Rights
    and Rights
    in Column (a))
 
Plan Category
  (a)     (b)     (c)  
 
Equity compensation plans approved by Terayon stockholders(1)
    9,664,399     $ 4.25       7,529,114  
Equity compensation plans not approved by Terayon stockholders(2)
    2,505,310     $ 6.82       1,719,164  
                         
Total
    12,169,709     $ 4.78       9,248,278  
                         
 
 
(1) Includes options to purchase common stock outstanding under the Terayon Communication Systems, Inc. 1995 Stock Option Plan, as amended (1995 Plan), the Terayon Communication Systems, Inc. 1997 Equity Incentive Plan, as amended (1997 Plan), and the Terayon Communication Systems, Inc. 1998 Non-Employee Directors Stock Option Plan, as amended (1998 Plan). Does not include 600,371 shares of our common stock that were available for issuance under the Terayon Communication Systems, Inc. 1998 Employee Stock Purchase Plan, as amended, which was also approved by our stockholders, including the Terayon Communication Systems, Inc. 1998 Employee Stock Purchase Plan Offering for Foreign Employees. The 1997 Plan was amended on June 13, 2000 to, among other things, provide for an increase in the number of shares of our common stock on each January 1 beginning January 1, 2001 through January 1, 2007, by the lesser of 5% of our common stock outstanding on such January 1 or 3,000,000 shares. In May 2003, the 1997 Plan was amended to reduce the number of authorized shares in the 1997 Plan by 6,237,826 shares. In May 2005, the 1997 Plan was amended to reduce the number of authorized shares in the 1997 Plan by 4,000,000 shares.
 
(2) Includes options to purchase common stock outstanding under the Terayon Communication Systems, Inc. 1999 Non-Officer Equity Incentive Plan, as amended (1999 Plan), Mainsail Equity Incentive Plan, TrueChat Equity Incentive Plan, and options issued outside of any equity incentive plan. See Note 9, “Stockholder’s Equity,” to Consolidated Financial Statements for additional information regarding the provisions of the 1999 Plan.


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Stock Performance Graph
 
This performance graph shall not be deemed to be “soliciting material,” and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (Exchange Act) or otherwise subject to the liabilities under that Section, and shall not be deemed to be incorporated by reference into any filing of the Company under the Securities Act of 1933, as amended or the Exchange Act.
 
The following graph compares the cumulative total stockholder return of an investment of $100 in cash from December 31, 2001 through December 31, 2006 for (i) the Company’s common stock, (ii) the Standards & Poor’s 500 Index (S&P 500) and (iii) the NASDAQ Telecommunications Index (NASDAQ Telecom). All values assume reinvestment of the full amount of all dividends and are calculated as of the last trading day of each year listed. Such returns are based on historical results and are not intended to suggest future performance.
 
Comparison of Five-Year Cumulative Return for Terayon, S&P 500 and NASDAQ Telecom
 
(GRAPH)
 
                                                             
      2001     2002     2003     2004     2005     2006
Terayon
    $ 100.00       $ 24.79       $ 54.41       $ 32.77       $ 27.93       $ 26.96  
S&P 500
      100.00         76.63         96.85         105.56         108.73         123.54  
NASDAQ Telecom
      100.00         45.97         77.58         83.78         77.74         99.32  
                                                             


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Item 6.   Selected Financial Data
 
The following selected consolidated statement of operations data set forth below for each of the five years ended December 31, 2006, 2005, 2004, 2003 and 2002 (unaudited), and the selected consolidated balance sheet data as of December 31, 2006, 2005, 2004, 2003 and 2002 (unaudited), are derived from our consolidated financial statements. The following selected historical consolidated financial and other data are qualified by reference to, and should be read in conjunction with, our consolidated financial statements, the related notes and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included elsewhere in this Annual Report on Form 10-K.
 
                                         
    Year Ended December 31,  
    2006     2005     2004     2003     2002  
    (In thousands, except per share data)  
 
Consolidated statement of operations data:
                                       
Revenues
  $ 76,430     $ 90,664     $ 136,484     $ 130,187     $ 130,730  
Cost of goods sold
    30,848       55,635       101,887       103,835       101,808  
                                         
Gross profit
    45,582       35,029       34,597       26,352       28,922  
                                         
Operating expenses
Research and development
    17,377       17,650       33,199       42,634       58,696  
Sales and marketing
    17,897       22,534       24,145       26,781       35,704  
General and administrative
    24,944       20,356       12,039       11,934       15,639  
Restructuring charges, executive severance and asset write-offs(1)
    199       2,257       12,336       2,803       8,922  
Total operating expenses
    60,417       62,797       81,719       84,152       118,961  
                                         
Loss from operations
    (14,835 )     (27,768 )     (47,122 )     (57,800 )     (90,039 )
                                         
Interest income (expense) and other income (expense), net
    1,200       966       (59 )     1,891       (618 )
Gain on sale of assets(2)
    9,984                          
Gain on early extinguishment of debt(3)
                            50,983  
Income tax benefit (expense)
    (180 )     (149 )     76       (316 )     (238 )
                                         
Net loss
  $ (3,831 )   $ (26,951 )   $ (47,105 )   $ (56,225 )   $ (39,912 )
                                         
Basic and diluted net loss per share
  $ (0.05 )   $ (0.35 )   $ (0.62 )   $ (0.76 )   $ (0.55 )
                                         
Shares used in computing basic and diluted net loss per share(4)
    77,637       77,154       75,751       74,074       72,718  
                                         
Consolidated Balance Sheet Data:
                                       
Cash, cash equivalents and short-term investments
  $ 20,313     $ 101,301     $ 97,735     $ 138,640     $ 206,503  
Working capital
    22,852       22,045       107,052       138,035       178,091  
Total assets
    51,970       146,648       156,981       213,099       279,169  
Convertible debentures
          65,367       65,588       65,809       66,030  
Long-term obligations (less current portion)
    1,399       1,455       2,076       1,356       1,936  
Accumulated deficit
    (1,066,269 )     (1,062,438 )     (1,035,487 )     (988,382 )     (932,157 )
Total stockholders’ equity
    19,822       20,657       44,943       90,563       142,191  
 
 
(1) See Note 6, “Restructuring Charges and Asset Write-Offs,” to Consolidated Financial Statements for an explanation of restructuring charges and asset write-offs.


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(2) See Note 14, “Sale of Certain Assets,” to Consolidated Financial Statements for an explanation of the gain on the sale of certain assets.
 
(3) See Note 7, “Convertible Subordinated Notes,” to Consolidated Financial Statements for an explanation of the repurchase of subordinated convertible notes and reclassification of related gains.
 
(4) See Note 2, “Summary of Significant Accounting Policies,” to Consolidated Financial Statements for an explanation of the method employed to determine the number of shares used to compute per share data.
 
Item 7.   Management’s Discussion and Analysis of Financial Condition and Results of Operations
 
Executive Overview
 
We currently develop, market and sell digital video equipment to network operators and content aggregators who offer video services. Our primary products include the Network CherryPicker® line of digital video processing systems and the CP 7600 line of digital-to-analog decoders. Our products are used for multiple digital video applications, including the rate shaping of video content to maximize the bandwidth for standard definition (SD) and high definition (HD) programming, grooming customized channel line-ups, carrying local ads for local and national advertisers, and branding by inserting corporate logos into programming. Our products are sold primarily to cable operators, telecom carriers and satellite providers in the United States, Europe (including the Middle East) and Asia.
 
We were founded in 1993 to provide cable operators with a cable data system enabling them to offer high-speed, broadband Internet access to their subscribers. By 1999, we were primarily selling this cable data system — composed of cable modems and cable modem termination systems (CMTS) — which utilized our proprietary Synchronous Code Division Multiple Access (S-CDMA) technology. Also in 1999, we initiated an acquisition strategy that ultimately included the acquisition of ten companies to expand our product offerings within the cable industry and outside of the cable industry to the telecom and satellite industries. With the market downturn in 2000, we refocused our business to target the cable industry and began selling data and voice products based on industry standard specifications, particularly the Data Over Cable System Interface Specification (DOCSIS), thereby beginning our transition from proprietary-based products to standards-based products. Also at this time, we focused our business on providing digital video products to cable operators and satellite providers. Since 2000, we have terminated our data-over-satellite business and all of our acquired telecom-focused businesses and incurred restructuring charges in connection with these actions.
 
In 2004, we refocused the Company to make digital video products and applications the core of our business. In particular, we began expanding our focus beyond cable operators to more aggressively pursue opportunities for our digital video products with television broadcasters, telecom carriers and satellite television providers. As part of this strategic refocus, we elected to continue selling our home access solutions (HAS) product, including cable modems, embedded multimedia terminal adapters (eMTA) and home networking devices, but ceased future investment in our CMTS product line. This decision was based on weak sales of the CMTS products and the anticipated extensive research and development investment required to support the product line in the future. As part of our decision to cease investment in the CMTS product line, we incurred severance, restructuring and asset impairment charges. The decision to cease investment in the CMTS product line was also the basis of the lawsuit filed by Adelphia Communications Coroporation (Adelphia) against us. In March 2005, we sold certain modem semiconductor assets to ATI Technologies, Inc. and terminated our internal semiconductor group.
 
In January 2006, we announced that the Company would focus solely on digital video product lines, and as a result, we discontinued our HAS product line. We determined that there were no short- or long-term synergies between our HAS product line and digital video product lines which made the HAS products increasingly irrelevant given our core business of digital video. Though we continued to sell our remaining inventory of HAS products and CMTS products in 2006, the profit margins for our cable modems and eMTAs have continued to decrease due to competitive pricing pressures and the ongoing commoditization of the products.


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We have not been profitable since our inception. At December 31, 2006, our accumulated deficit was $1.1 billion. We had a net loss of $3.8 million or $0.05 per share for the year ended December 31, 2006, a net loss of $27.0 million or $0.35 per share for the year ended December 31, 2005 and a net loss of $47.1 million or $0.62 per share for the year ended December 31, 2004. Our ability to grow our business and attain profitability is dependent on our ability to effectively compete in the marketplace with our current products and services, develop and introduce new products and services, contain operating expenses and improve our gross margins, as well as continued investment in equipment by network operators and content aggregators. Finally, we expect to benefit from a lower expense base resulting in part from the series of cost reduction initiatives that occurred in 2005 and 2006, along with continued focus on cost containment. However, despite these efforts, we may not succeed in attaining profitability in the near future, or at all.
 
At December 31, 2006, we had $20.3 million in cash, cash equivalents and short-term investments as compared to $101.3 million at December 31, 2005 and $97.7 million at December 31, 2004. The $81.0 million decrease from December 31, 2005 to December 31, 2006 is primarily related to the repurchase in full of our outstanding convertible subordinated notes (Notes) due August 2007 including all accrued and unpaid interest and related fees in March 2006 for $65.6 million, operating activities and legal, accounting and consulting costs associated with our internal investigation and the re-audit and restatement of our financial statements for the years ended December 31, 2003, 2004, and for the first two quarters of 2005. The decrease in the amount of cash, cash equivalents and short-term investments in 2005 as compared to 2004 primarily resulted from the lower uses of cash for operating activities, payments for inventory and restructuring charges and the monetization of CMTS inventory. Although we believe that our current cash balances will be sufficient to satisfy our cash requirements for at least the next 12 months, we may need to raise additional funds in order to support more rapid expansion, develop new or enhanced services, respond to competitive pressures, acquire complementary businesses or technologies or respond to unanticipated requirements. There can be no assurance that additional financing will be available on acceptable terms, if at all. If adequate funds are not available or are not available on acceptable terms, we may be unable to continue operations, develop products, take advantage of future opportunities or respond to competitive pressures or unanticipated requirements, which could have a material adverse effect on our business, financial condition, operating results and liquidity.
 
A more detailed description of the risks to our business can be found in Item 1A — Risk Factors in this Form 10-K.
 
Changes to Previously Announced Fourth Quarter and Fiscal Year 2006 Results
 
On March 22, 2007, we announced our preliminary financial results for the fourth quarter and the fiscal year ended December 31, 2006. Subsequent to the announcement, we entered into a Termination Agreement with General Electric Capital Corporation (GECC) terminating the Aircraft Lease Agreement, dated as of February 8, 2002, under which we previously leased an aircraft from GECC. Pursuant to the Termination Agreement, on March 28, 2007, GECC returned to Terayon approximately $6.8 million of the $7.5 million cash deposit held by GECC as collateral for the jet aircraft, and GECC will retain $0.7 million in collateral subject to GECC’s completion of certain repairs, tests, inspections and corrections to the jet aircraft, which GECC has estimated will cost $0.6 million. As a result, in accordance with GAAP, the preliminary financial results for the fourth quarter and fiscal year ended December 31, 2006 have been adjusted by a $0.6 million reduction in net income, reflecting the $0.6 million of estimated repair costs. This resulted in an increase of net loss per share of $0.01, from a net loss of $0.04 to $0.05 per share for the fiscal year ended December 31, 2006.
 
Restatement of Consolidated Financial Statements
 
In our Annual Report on Form 10-K for the year ended December 31, 2005, filed on December 29, 2006, we restated our consolidated financial statements for the years ended December 31, 2003 and 2004, and for the four quarters of 2004 and the first two quarters of 2005. All financial information included in this Annual Report on Form 10-K reflects the restatement.


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Results of Operations
 
Comparison of Years Ended December 31, 2006 and 2005
 
Revenues
 
Our revenues decreased 16% to $76.4 million for the year ended December 31, 2006, compared to $90.7 million for the year ended December 31, 2005. While revenues from our DVS products increased during these periods, the overall decrease in revenues was primarily due to decreased sales of our HAS and CMTS products following our discontinuation of both product lines. We expect overall revenues to decrease in 2007 compared to 2006 due to lower CMTS and HAS product revenues, as we sell off remaining inventory. We expect revenues from the sale of our DVS products to increase in 2007 compared to 2006, primarily due to the introduction of new software applications, sales to an expanded customer base which includes telecommunication and broadcast satellite companies, increased international opportunities and additional sales to MSOs as they build out their digital networks.
 
Our ability to grow DVS revenues will depend upon several factors including the continued investment of our MSO customers in their digital video network infrastructure; our ability to compete on quality and price in an increasingly competitive marketplace; our ability to maintain or improve market share with MSOs; our ability to diversify our customer base to additional MSOs; our ability to increase sales and revenues from overseas customers; our ability to sell outside of the cable industry, namely to digital broadcast satellite operators, telecom companies and potential new video service providers; and our ability to continue to develop product modifications and upgrades that meet customers’ needs.
 
Revenues by Groups of Similar Products
 
The following table presents revenues for groups of similar products (in thousands, except percentages):
 
                                 
    Year Ended
             
    December 31,     Variance in
    Variance in
 
    2006     2005     Dollars     Percent  
 
Revenues by product:
                               
DVS
  $ 58,547     $ 41,806     $ 16,741       40.0 %
HAS
    13,569       41,061       (27,492 )     (67.0 )%
CMTS
    4,314       7,797       (3,483 )     (44.7 )%
                                 
Total
  $ 76,430     $ 90,664     $ (14,234 )     (15.7 )%
                                 
 
Revenues from the sale of HAS products decreased to $13.6 million, or 18% of revenues for the year ended December 31, 2006, compared to $41.1 million, or 45% of revenues for the year ended December 31, 2005. In January 2006, we announced that we were discontinuing the HAS product line to focus solely on digital video. As a result, we continue to sell our remaining HAS inventory and collect the remaining receivables with respect to our HAS products, and we expect revenue from the sale of our HAS products to continue to decline in 2007. We anticipate that all remaining HAS inventories will be sold during 2007. CMTS revenues decreased to $4.3 million, or 6% of revenues for the year ended December 31, 2006, compared to $7.8 million, or 9% of revenues for the year ended December 31, 2005. The continued decline in CMTS product revenue resulted from our decision to cease investment in CMTS products in the fourth quarter of 2004 and the resulting decrease in CMTS sales. We do not believe that sales of CMTS products will be material in 2007.
 
Revenues from the sale of DVS products increased to $58.5 million for the year ended December 31, 2006, compared to $41.8 million for the year ended December 31, 2005.


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The following is a breakdown of DVS revenue by period invoiced (in millions, except percentages):
 
                                 
    Year Ended
             
    December 31,     Variance in
    Variance in
 
    2006     2005     Dollars     Percent  
 
DVS product revenue invoiced and recognized in current period:
                               
Total invoiced in current period
  $ 45.5     $ 53.9     $ (8.4 )     (15.6 )%
Less: Invoiced in current period and recognized in future periods
    4.0       27.4       (23.4 )     (85.4 )%
                                 
Total invoiced and recognized in current period
    41.5       26.5       15.0       56.6 %
DVS product revenue invoiced in prior fiscal years and recognized in current period
    17.0       15.3       1.7       11.1 %
                                 
Total DVS product revenue recognized in current period
  $ 58.5     $ 41.8     $ 16.7       40.0 %
                                 
 
Although total revenue recognized from the sale of DVS products increased in the year ended December 31, 2006 compared to the same period in 2005, the amount of DVS product revenue invoiced in 2006 decreased compared to the same period in 2005. The amount of DVS product revenue invoiced in 2006 and 2005 was $45.5 million and $53.9 million, respectively, representing a decrease of 16%. Of the DVS product revenue invoiced during 2006 and 2005, $41.5 million and $26.5 million, respectively, was recognized as revenue during 2006 and 2005, while the remaining amounts of $4.0 million and $27.4 million, respectively, will be recognized as revenue in future periods. The increase in revenue invoiced and recognized in the current period and the corresponding decrease in revenue invoiced in the current period but deferred and recognized in future periods is primarily attributable to our establishment of vendor specific objective evidence (VSOE) of fair value for the post-contract support (PCS) element of the DVS products in the first quarter of 2006. Additionally, primarily due to the lack of establishing VSOE of fair value of the PCS element of the DVS products prior to the first quarter of 2006, $17.0 million and $15.3 million of DVS product revenue invoiced in prior periods was recognized during the years ended December 31, 2006 and 2005, respectively.
 
Revenues by Geographic Region
 
The following table is a breakdown of revenues by geographic region (in thousands, except percentages):
 
                                 
    Year Ended
             
    December 31,     Variance in
    Variance in
 
    2006     2005     Dollars     Percent  
 
Revenues by geographic region:
                               
United States
  $ 54,387     $ 52,838     $ 1,549       2.9 %
Americas, excluding United States
    2,932       1,871       1,061       56.7 %
Europe, Middle East and Africa (EMEA), excluding Israel
    11,236       15,314       (4,078 )     (26.6 )%
Israel
    3,427       7,645       (4,218 )     (55.2 )%
Asia, excluding Japan
    3,078       11,544       (8,466 )     (73.3 )%
Japan
    1,370       1,452       (82 )     (5.6 )%
                                 
Total
  $ 76,430     $ 90,664     $ (14,234 )     (15.7 )%
                                 
 
Revenues in the United States increased to $54.4 million for the year ended December 31, 2006, compared to $52.8 million for the year ended December 31, 2005. The increase in revenue in the United States was primarily attributable to the recognition of deferred revenue from prior periods, as well as continued build-out of all-digital simulcast (ADS) networks by several major multiple system operators (MSOs) in 2006 and increased purchases of our DM platform to provide localized advertising. We expect that sales to MSOs in the United States will continue to be the main source of our overall revenues in 2007 due to


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the expected build-out of ADS networks by second- and third-tier MSOs and the increasing importance of ad insertion within the United States market. The decrease in international revenues is primarily attributable to the discontinuation of our CMTS and HAS products which typically accounted for the majority of our revenues outside the United States. We anticipate that total international revenues will continue to decrease in 2007 based on the continued decline in sales of our CMTS and HAS products as we exhaust the remaining inventory of these products. DVS product revenues outside the United States have been nominal, and we expect such revenues to continue to be nominal in the foreseeable future, in part because ad insertion is less popular and often not feasible outside the United States.
 
Significant Customers
 
Two customers, Comcast Corporation (Comcast) and Harmonic, Inc. (Harmonic), each accounted for 10% or more of total revenues (20% and 15%, respectively) for the year ended December 31, 2006. Three customers, Harmonic, Thomson Broadcast and Comcast each accounted for 10% or more of our total revenues (12%, 11% and 10%, respectively) for the year ended December 31, 2005.
 
Two customers, Comcast and Ascent Media, each accounted for 10% or more of accounts receivable (40% and 18%, respectively) as of December 31, 2006. Four customers, Comcast, HOT Telecom, Wharf T&T Limited and CSC Holdings, each accounted for 10% or more of accounts receivable (16%, 11%, 11% and 11%, respectively) as of December 31, 2005.
 
Cost of Goods Sold and Gross Profit
 
Total cost of goods sold consists of direct product costs as well as the cost of our manufacturing operations. The cost of manufacturing includes contract manufacturing, test and quality assurance for products, warranty costs and associated costs of personnel and equipment.
 
Total cost of goods sold decreased to $30.8 million in the year ended December 31, 2006 from $55.6 million in the year ended December 31, 2005.
 
Direct cost of goods sold for our HAS products was $9.3 million and $33.3 million, respectively, for the years ended December 31, 2006 and 2005. The direct cost of goods sold for our HAS products decreased due to declining sales of our HAS products following our decision to discontinue the product line in January 2006. The direct cost of goods sold for our CMTS products was $1.5 million and $4.8 million, respectively, for the years ended December 31, 2006 and 2005. The direct cost of goods sold for our CMTS products decreased as total units sold for our CMTS products decreased because of our decision to cease investment in the CMTS product line in the fourth quarter of 2004.
 
Direct cost of goods sold related to our DVS products increased to $14.1 million in the year ended December 31, 2006, compared to $8.7 million in the year ended December 31, 2005.


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The following is a breakdown of DVS cost of goods sold by period invoiced (in millions, except percentages):
 
                                 
    Year Ended
             
    December 31,     Variance in
    Variance in
 
    2006     2005     Dollars     Percent  
 
Cost of goods sold related to DVS product invoiced and recognized in current period:
                               
Total cost of goods sold related to DVS product invoiced in current period
  $ 9.7     $ 13.4     $ (3.7 )     (27.6 )%
Less: Cost of goods sold related to DVS product invoiced in current period and recognized in future periods
    0.1       7.4       (7.3 )     (98.6 )%
                                 
Total cost of goods sold related to DVS product invoiced and recognized in current period
  $ 9.6     $ 6.0     $ 3.6       60.0 %
Cost of goods sold related to DVS product invoiced in prior fiscal years and recognized in current period
    4.2       2.7       1.5       55.6 %
                                 
Total cost of goods sold related to DVS product recognized in current period
  $ 13.8     $ 8.7     $ 5.1       58.6 %
                                 
 
In the years ended December 31, 2006 and 2005, the cost of goods sold related to DVS products invoiced during the period was $9.7 million and $13.4 million, respectively, representing a decrease of $3.7 million. Cost of goods sold related to revenue invoiced and recognized on DVS products during 2006 and 2005 was $9.6 million and $6.0 million, respectively. In the first quarter of 2006, we established VSOE of fair value for the PCS element of our DVS products, which allowed us to recognize revenue and cost of goods sold related to the hardware component of our DVS products when all criteria of Staff Accounting Bulletin No. 101, “Revenue Recognition” (SAB 101), as amended by SAB 104, and American Institute of Certified Public Accountants Statement of Position 97-2, “Software Revenue Recognition” (SOP 97-2), had been met. Accordingly, cost of goods sold related to DVS products invoiced in 2006 and recognized in future periods was $0.1 million, compared to $7.4 million for 2005 due to the lack of established VSOE of fair value for all elements of our DVS products in periods prior to the first quarter of 2006. Additionally, $4.2 million and $2.7 million, respectively, of cost of goods sold were recognized during 2006 and 2005 for DVS products invoiced in prior periods. The breakdown of DVS cost of goods sold by period invoiced does not include non-warranty DVS repairs of $0.3 million and $0.1 million for the years ended December 31, 2006 and 2005, respectively, or trial and demonstration orders of nominal amounts.
 
For the year ended December 31, 2006, gross profit was $45.6 million, or 60% of revenues. This represented a $10.6 million increase compared to the year ended December 31, 2005, in which gross profit was $35.0 million, or 39% of revenues. The increase in our gross profit as a percentage of revenues was primarily attributable to an increase in revenues from the sales of our higher margin DVS products and a decrease in revenues from our lower margin HAS and CMTS products. Gross profit for the year ended December 31, 2006 reflected a $1.5 million benefit related to the sale of inventories that were reserved at December 31, 2005 as excess and obsolete compared to a $3.9 million benefit for the year ended December 31, 2005 related to the sale of inventories that were reserved at December 31, 2004 as excess and obsolete, as well as accrued vendor cancellation charges. The $1.5 million benefit in 2006 was offset by a $0.9 million increase in excess and obsolete inventory reserve requirements. The $3.9 million benefit in 2005 was offset by a $2.6 million increase in excess and obsolete inventory reserve requirements and vendor cancellation charges.
 
During 2007, we will continue to focus on improving sales of our higher margin DVS products and reducing product manufacturing costs. As we complete the transition to a digital video company, our revenues will primarily consist of DVS products, and thus, we expect our gross profit margin percentages to increase as a result of increased revenues from higher margin DVS products as a percentage of our overall revenues.


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Operating Expenses
 
Research and development, sales and marketing, general and administrative expenses and restructuring charges, executive severance and asset write-offs are summarized in the following table (in thousands, except percentages):
 
                                 
    Year Ended
             
    December 31,     Variance in
    Variance in
 
    2006     2005     Dollars     Percent  
 
Research and development
  $ 17,377     $ 17,650     $ (273 )     (1.5 )%
Sales and marketing
    17,897       22,534       (4,637 )     (20.6 )%
General and administrative
    24,944       20,356       4,588       22.5 %
Restructuring charges, executive severance and asset write-offs
    199       2,257       (2,058 )     (91.2 )%
 
Research and Development.
 
Research and development expenses consist primarily of personnel costs, internally designed prototype material expenditures, expenditures for outside engineering consultants, and testing equipment and supplies required to develop and enhance our products. For the year ended December 31, 2006, research and development expenses were $17.4 million, or 23% of revenues, compared to $17.7 million, or 19% of revenues for the year ended December 31, 2005. The $0.3 million decrease in research and development expenditures in the year ended December 31, 2006 was primarily attributable to reductions in research and development based on the discontinuation of our CMTS product and decreased spending on HAS product innovation, which were offset by increased costs for DVS product development, including increased expenditures related to outsourced development services. We believe it is critical for us to continue to make significant investments in research and development to create innovative technologies and products that meet the current and future requirements of our customers. We anticipate that our overall research and development expenses will remain constant in 2007.
 
Sales and Marketing.
 
Sales and marketing expenses consist primarily of salaries and commissions for sales personnel, salaries for marketing and support personnel and costs related to marketing communications, consulting and travel. Sales and marketing expenses decreased to $17.9 million, or 23% of revenues for the year ended December 31, 2006, compared to $22.5 million, or 25% of revenues for the year ended December 31, 2005. The reduction in sales and marketing expense was partly attributable to a $0.6 million reduction in compensation and employee benefits expenses, a $0.5 million decrease in travel expenses that resulted from headcount reductions implemented in 2006, a $1.2 million decrease in marketing expenses primarily related to a reduction in tradeshows and advertising expenses, and a $0.7 million reduction in spending on outside sales and marketing professional services.
 
General and Administrative.
 
General and administrative expenses consist primarily of salary and benefits for administrative officers and support personnel, travel expenses and legal, accounting and consulting fees. For the year ended December 31, 2006, general and administrative expenses were $24.9 million, or 33% of revenues, compared to $20.4 million, or 22% of revenues for the year ended December 31, 2005. Higher general and administrative expenses were primarily a result of increased legal, auditing, financial consulting, and contractor costs of $4.2 million, compensation expenses of $0.7 million related to bonus plans and severance payments, $0.6 million of repair expense related to the termination of our aircraft lease and $0.8 million related to facility expenses and moving costs. These increases were partially offset by decreases in recruiting expenses of $0.3 million, decreased depreciation and amortization of $0.4 million and decreases to employee benefits of $0.1 million.


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We have incurred substantial expenses for legal, accounting, tax and other professional services in connection with the internal review of our historical financial statements, the re-audit of our historical financial statements for the years ended December 31, 2004 and 2003 and the review of the four quarters of 2004 and 2005, the preparation of the restated financial statements, the Commission investigation and inquiries from other governmental agencies, the related class action litigation and the repayment in full of our 5% convertible subordinated notes (Notes). Excluding the $65.6 million that we paid to the holders of the Notes in March 2006, which consisted of the face value of the Notes and the accrued and unpaid interest and related costs, these expenses amounted to approximately $10.6 million through December 31, 2006. We anticipate that our overall general and administrative expense will decrease in 2007.
 
Restructuring Charges, Executive Severance and Asset Write-offs.
 
Restructuring charges, executive severance and asset write-offs for the year ended December 31, 2006 were $0.2 million. The amount consists primarily of a decrease in an accrual of $0.8 million due to a change in estimate for excess leased facilities and $1.0 million charge for the write-off of leasehold improvements related to the Santa Clara facility. Restructuring charges, executive severance and asset write-offs for the year ended December 31, 2005 totaled $2.3 million and related primarily to severance and benefit costs.
 
Restructuring charges, executive severance and asset write-offs are summarized as follows (in thousands, except percentages):
 
                                 
    Year Ended
             
    December 31,     Variance in
    Variance in
 
    2006     2005     Dollars     Percent  
 
Restructuring charges
  $     $ 1,003     $ (1,003 )     (100.0 )%
Executive severance
          15       (15 )     (100.0 )%
Long-lived assets written-off
    962       85       877       1031.8 %
                                 
Subtotal
    962       1,103       (141 )     (12.8 )%
Restructuring (recovery/change in estimate in prior year plans)
    (763 )     1,154       (1,917 )     (166.1 )%
                                 
Restructuring charges, executive severance and asset write-offs
  $ 199     $ 2,257     $ (2,058 )     (91.2 )%
                                 
 
For further detail, refer to Note 6, “Restructuring Charges and Asset Write-offs,” to Condensed Consolidated Financial Statements
 
Non-operating Expenses
 
Interest income (expense), net and other income, net were as follows (in thousands, except percentages):
 
                                 
    Year Ended
             
    December 31,     Variance in
    Variance in
 
    2006     2005     Dollars     Percent  
 
Interest income (expense), net
  $ 1,178     $ (189 )   $ 1,367       (723.3 )%
Other income, net
    22       1,155       (1,133 )     (98.0 )%
 
Interest income (expense), net relates primarily to $1.6 million of income generated from investments in high-quality fixed income securities, offset by $0.4 million of interest expense on our Notes. We expect our interest income (expense), net to decrease in future periods based upon our reduction in short-term investments resulting from the repurchase of our Notes in the first quarter of 2006.
 
Other income, net is generally comprised of realized foreign currency gains and losses, realized gains or losses on investments, and income attributable to non-operational gains and losses. The decrease in other income, net for the years ended December 31, 2006 compared to the year ended December 31, 2005 was largely attributable to the recognized gain on the sale of Terayon Communication Systems Ltd. to Megabridge in 2005 and increased amortization of bond issuance costs due to the retirement of our Notes in 2006.


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Income Tax (Expense) Benefit
 
With the exception of the three months ended June 30, 2006, we have generated losses since our inception. We have not recorded a tax provision based on net income for the year ended December 31, 2006, due to the large net operating loss carry forwards we have to offset any federal and state tax liability. Income tax expense for the years ended December 31, 2006 and 2005 is nominal and primarily related to foreign taxes.
 
Stock-Based Compensation
 
On January 1, 2006, we adopted Statement of Financial Accounting Standards (SFAS) No. 123(R), “Share-Based Payment,” (SFAS 123(R)), which requires the measurement and recognition of stock-based compensation expense for share-based payment awards. We elected to adopt SFAS 123(R) using the modified prospective recognition method. The modified prospective recognition method requires us to recognize compensation cost for new and unvested stock options, restricted stock, restricted stock units and employee stock purchase plan shares. Under the modified prospective recognition method, prior period financial statements are not restated.
 
Prior to the adoption of SFAS 123(R) on January 1, 2006, we accounted for stock-based compensation using the intrinsic value method prescribed in Accounting Principles Board (APB) Opinion 25, “Accounting for Stock Issued to Employees” (APB 25). Under APB 25, compensation cost was measured as the excess, if any, of the quoted market price of our stock at the date of grant over the exercise price of the stock option granted. Under APB 25, compensation cost for stock options, if any, was recognized over the vesting period using the straight-line single option method.
 
During the year ended December 31, 2006, we recorded $2.5 million in stock-based compensation compared to zero stock-based compensation recorded during the year ended December 31, 2005. At December 31, 2006, unamortized compensation expense related to outstanding unvested stock options that are expected to vest was approximately $2.9 million. This unamortized compensation expense is expected to be recognized over a weighted average period of approximately 2.2 years.
 
Comparison of Years Ended December 31, 2005 and 2004
 
Revenues
 
Our revenues declined 34% to $90.7 million for the year ended December 31, 2005 from $136.5 million in 2004, due to sales of HAS and CMTS products decreasing from 2004 to 2005 by $41.0 million or 50% of HAS revenue, and $22.4 million or 74% of CMTS revenue, respectively. The decline in CMTS revenue is directly related to our announcement in October 2004 that we would cease investment in future development of CMTS. The decline in our HAS revenue resulted from decreased market demand for traditional, data-only modems and the inability for our voice-enabled eMTA modems to find widespread market acceptance. Revenue from our DVS product line increased 74% to $41.8 million in 2005, up from $24.1 million in 2004. The increase in DVS revenue was driven primarily by demand from our MSO customers in the United States which continued to upgrade their networks as part of their efforts to implement ADS networks that included digital program insertion capabilities as well as ADS build out by the second tier MSOs.
 
Revenue in 2004 and 2005 was impacted by the recognition of sales invoiced in prior periods as well as sales invoiced in the current period recognized in future periods. In 2004 and 2005, $9.7 million and $15.9 million, respectively, of revenue was recognized from sales invoiced in prior periods including deferred revenues. Deferred revenue recognized in 2005 includes $7.8 million of revenue related to sales of our BP 5100 product to Thomson Broadcast that was previously recognized in 2004 but deferred to the quarter ended December 31, 2005 in connection with the restatement. In 2004 and 2005, $15.6 million and $30.4 million, respectively, of revenue billed in the current period was recognized in future periods.


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Revenues by Groups of Similar Products
 
The following table presents revenues for groups of similar products (in thousands, except percentages):
 
                                 
    Year Ended
             
    December 31,     Variance in
    Variance in
 
    2005     2004     Dollars     Percent  
 
Revenues by product:
                               
DVS
  $ 41,806     $ 24,102     $ 17,704       73.5 %
HAS
    41,061       82,068       (41,007 )     (50.0 )%
CMTS
    7,797       30,210       (22,413 )     (74.2 )%
Other
          104       (104 )     (100.0 )%
                                 
Total
  $ 90,664     $ 136,484     $ (45,820 )     (33.6 )%
                                 
 
Revenue from the sale of our HAS products decreased from $82.1 million or 60% of revenue for the year ended December 31, 2004 to $41.1 million or 45% of revenue for the year ended December 31, 2005. The decrease in HAS product revenue was primarily driven by the failure of our eMTA modems to find widespread market acceptance among MSOs due to the lack of features and functionality demanded by MSOs and provided by our competitors in their eMTA modems. In 2005, MSOs increasingly purchased eMTA modems versus traditional modems, which resulted in the decline of our traditional modem revenues. As a result of this decrease and the failure of our eMTA modems to gain widespread market acceptance, our overall modem revenues decreased. HAS sales were also negatively impacted by our decision to cease investment in our CMTS products in 2004, as we were no longer able to bundle and sell our HAS and CMTS products as an end-to-end solution, as well as customer concerns regarding our commitment to continue to sell and support modems in future periods. In January 2006, we announced that we would focus solely on our DVS products.
 
Revenue from the sale of our CMTS products decreased 74% from $30.2 million and 22% of revenue as of December 31, 2004, to $7.8 million and 9% of revenue as of December 31, 2005. The decrease in CMTS product revenue resulted from our decision to cease investment in CMTS products in the fourth quarter of 2004 and the resulting decrease in CMTS sales. CMTS also decreased as a percentage of revenue due to a significant decrease in sales of CMTS products and an increase in sales of the DVS products.
 
Revenue from the sale of our DVS products increased from $24.1 million or 18% of revenue, for the year ended December 31, 2004 to $41.8 million or 46% of revenue, for the year ended December 31, 2005. The increase in the revenue of the DVS products as a percentage of sales in 2005 compared to 2004 was driven by increased sales of DVS products and the recognition of $7.8 million of revenue related to the sale of our BP 5100 product and service to Thomson Broadcast that was deferred from 2004 to the fourth quarter of 2005. DVS also increased as a percentage of revenue due to a significant decline in sales of and revenue generated by the sale of HAS and CMTS products in 2005 compared to 2004.


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The following is a breakdown of DVS revenue by period invoiced (in millions, except percentages):
 
                                 
    Year Ended
             
    December 31,     Variance in
    Variance in
 
    2005     2004     Dollars     Percent  
 
DVS product revenue invoiced and recognized in current period:
                               
Total invoiced in current period
  $ 53.9     $ 36.8     $ 17.1       46.5 %
Less: Invoiced in current period and recognized in future periods
    27.4       15.0       12.4       82.7 %
                                 
Total invoiced and recognized in current period
  $ 26.5     $ 21.8     $ 4.7       21.6 %
DVS product revenue invoiced in prior fiscal years and recognized in current period
    15.3       2.3       13.0       565.2 %
                                 
Total DVS product revenue recognized in current period
  $ 41.8     $ 24.1     $ 17.7       73.4 %
                                 
 
Total DVS product revenue recognized in the current period increased significantly in the year ended December 31, 2005 compared to 2004. Total DVS product revenue recognized in the years ended December 31, 2005 and 2004 was $41.8 million and $24.1 million, respectively, which represented an increase of $17.7 million, or 73%, in 2005 compared to 2004. The total DVS product revenue invoiced during the current period increased in the year ended December 31, 2005 compared to 2004. In the years ended December 31, 2005 and 2004, the amount of DVS product revenue invoiced was $53.9 million and $36.8 million, respectively, which represents an increase of $17.1 million, or 47%, in 2005 compared to 2004. In the years ended December 31, 2005 and 2004, the amount of DVS product revenue invoiced and recognized during the period invoiced was $26.5 million and $21.8 million, respectively, with an increase of $4.7 million, or 22%, in 2005 compared to 2004. Of the DVS product revenue invoiced, $27.4 million and $15.0 million, respectively, was recognized in future periods, which represented an increase of $12.4 million, or 83%, in 2005 compared to 2004. During the years ended December 31, 2005 and 2004, $15.3 million and $2.3 million of DVS product revenue recognized, respectively, had been invoiced in prior periods, which represents an increase of $13.0 million, or 565%.
 
Revenues by Geographic Region
 
The following table is a breakdown of revenues by geographic region (in thousands, except percentages):
 
                                 
    Year Ended
             
    December 31,     Variance in
    Variance in
 
    2005     2004     Dollars     Percent  
 
Revenues by geographic areas:
                               
United States
  $ 52,838     $ 72,838     $ (20,000 )     (27.5 )%
Americas, excluding United States
    1,871       4,930       (3,059 )     (62.0 )%
Europe, Middle East and Africa (EMEA), excluding Israel
    15,314       17,640       (2,326 )     (13.2 )%
Israel
    7,645       16,645       (9,000 )     (54.1 )%
Asia, excluding Japan
    11,544       15,259       (3,715 )     (24.3 )%
Japan
    1,452       9,172       (7,720 )     (84.2 )%
                                 
Total
  $ 90,664     $ 136,484     $ (45,820 )     (33.6 )%
                                 
 
Revenues in all geographic markets declined due to decreased sales of HAS and CMTS products to MSOs. Revenues in the United States decreased 28% to $52.8 million in the year ended December 31, 2005, down from $72.8 million in 2004. However, revenue in the United States increased as a percentage of sales from 53% of total revenues at December 31, 2004 to 58% of total revenues at December 31, 2005 due primarily to a decrease in sales of HAS and CMTS products, where sales were concentrated outside the United


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States. Revenues in EMEA, excluding Israel, decreased 13% to $15.3 million in the year ended December 31, 2005, compared to $17.6 million in 2004, due to decreased sales of our CMTS and HAS products, partially offset by sales of the remaining CMTS and HAS inventory to MSOs in Eastern Europe. Sales of our DVS product in Europe were nominal in both the years ended December 31, 2005 and December 31, 2004. Revenue for Israel decreased 54% to $7.6 million in the year ended December 31, 2005, down from $16.6 million in the year ended December 31, 2004, as a result of decreased HAS sales. Sales of our DVS product in Israel were not material. Revenue in Asia, excluding Japan, decreased 24% to $11.5 million in the year ended December 31, 2005, down from $15.3 million in 2004. This decrease resulted from the significant decline in the sale of CMTS and HAS products due to our decision to cease investment in the CMTS product line in 2004. Sales of our DVS product in Asia, excluding Japan, were nominal. Revenue in Japan decreased 84% to $1.5 million from $9.2 million in 2004. This decrease was a result of a significant decline in the sale of CMTS and HAS products due to our decision to cease investment in the CMTS product line in 2004. Sales of our DVS product in Japan were nominal.
 
In 2005, we focused our sales activities on selling DVS products in the United States, which is the primary geographic market for our DVS products. As a result of increased revenues from MSO customers in the United States, our revenues from sales of DVS products outside the United States decreased from 18% of total DVS sales to 9% of total DVS sales between 2004 and 2005.
 
Significant Customers
 
Three customers, Harmonic, Thomson Broadcast and Comcast (12%, 11% and 10%, respectively), accounted for more than 10% each of our total revenues for the year ended December 31, 2005. Two customers, Adelphia and Comcast (20% and 13%, respectively), accounted for more than 10% each of our total revenues for the year ended December 31, 2004. In 2005, Adelphia ceased to be a significant customer following our decision to cease investment in the CMTS products.
 
Cost of Goods Sold and Gross Profit
 
Cost of goods sold consists of direct product costs as well as the cost of our manufacturing operations. The cost of manufacturing includes contract manufacturing, test and quality assurance for products, warranty costs and associated costs of personnel and equipment. In 2005, cost of goods sold was $55.6 million, or 61% of revenues, compared to $101.9 million, or 75% of revenues in 2004. Cost of goods sold in 2005 included the recognition of $2.7 million of direct development costs related to the sale of our BP 5100 product and service to Thomson Broadcast that was deferred from prior periods.
 
The cost of goods sold for our HAS products was $33.3 million and $60.4 million, respectively, for the years ended December 31, 2005 and 2004. The cost of goods sold for HAS decreased as total unit sales of HAS products decreased due to declining sales and improved pricing on component pricing. The cost of goods sold for our CMTS products was $4.8 million and $12.1 million, respectively, for the years ended December 31, 2005 and 2004. The cost of goods sold for our CMTS products decreased as total units sold for our CMTS products decreased due to our decision to cease investment in the CMTS product line and the related write-off of CMTS inventory in the three months ended December 31, 2004 that was deemed excess and obsolete.


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The following is a breakdown of DVS cost of goods sold by period invoiced (in millions, except percentages):
 
                                 
    Year Ended
             
    December 31,     Variance in
    Variance in
 
    2005     2004     Dollars     Percent  
 
Cost of goods sold related to DVS product invoiced and recognized in current period:
                               
Total cost of goods sold related to DVS product invoiced in current period
  $ 13.4     $ 7.8     $ 5.6       71.8 %
Less: Cost of goods sold related to DVS product invoiced in current period and recognized in future periods
    7.4       2.7       4.7       174.1 %
                                 
Total cost of goods sold related to DVS product invoiced and recognized in current period
  $ 6.0     $ 5.1     $ 0.9       17.6 %
Cost of goods sold related to DVS product invoiced in prior fiscal years and recognized in current period
    2.7       0.5       2.2       440.0 %
                                 
Total cost of goods sold related to DVS product recognized in current period
  $ 8.7     $ 5.6     $ 3.1       55.4 %
                                 
 
Total DVS product of cost goods sold recognized in the current period increased significantly in the year ended December 31, 2005 compared to 2004. Total DVS product cost of goods sold recognized in the years ended December 31, 2005 and 2004 was $8.7 million and $5.6 million, respectively, which represents an increase of $3.1 million, or 55%, in 2005 compared to 2004. Total DVS product cost of goods sold in the current period increased in the year ended December 31, 2005 compared to 2004. In the years ended December 31, 2005 and 2004, the cost of goods sold related to DVS products invoiced in the current period was $13.4 million and $7.8 million, respectively, which represents an increase of $5.6 million, or 72%, in 2005 compared to 2004. Cost of goods related to revenue invoiced and recognized on DVS products during the years ended December 31, 2005 and 2004 was $6.0 million and $5.1 million, respectively, which represents an increase of $0.9 million, or 18%, in 2005 compared to 2004. In the years ended December 31, 2005 and 2004, cost of goods sold related to DVS products invoiced in the current period and recognized in future periods was $7.4 million and $2.7 million, respectively, which represents an increase of $4.7 million, or 174%. Cost of goods sold related to revenue on DVS products invoiced in prior periods and recognized in the current period was $2.7 million and $0.5 million in the years ended December 31, 2005 and 2004, respectively, which represents an increase of $2.2 million, or 440%, in the year ended December 31, 2005 compared to 2004.
 
Our gross profit increased $0.4 million to $35.0 million, or 39% of revenue, in the year ended December 31, 2005 compared to $34.6 million, or 25% of revenue, in 2004. Offsetting the reduction in revenues, our increase in gross profit in 2005 was primarily related to the sales mix which consisted of increased sales of higher margin DVS products, as well as the sale of product previously reserved as excess and obsolete.
 
Cost of goods sold in 2005 included a $3.9 million benefit related to the sale of inventories that were reserved in prior periods as excess and obsolete and accrued vendor cancellation charges compared to $3.1 million for the year ended December 31, 2004. The $3.9 million benefit in 2005 was offset by a $2.6 million increase in excess and obsolete inventory reserve requirements and vendor cancellation charges. The $3.1 million benefit in 2004 was offset by a $12.3 million increase in excess and obsolete inventory reserve requirements and vendor cancellation charges. Excess and obsolete and vendor cancellation charges in 2004 included net charges of $9.2 million related to our decision to cease investment in the CMTS product line.


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Operating Expenses
 
Research and development, sales and marketing, general and administrative expenses and restructuring charges, executive severance and asset write-offs are summarized in the following table (in thousands, except percentages):
 
                                 
    Year Ended
             
    December 31,     Variance in
    Variance in
 
    2005     2004     Dollars     Percent  
 
Research and development
  $ 17,650     $ 33,199     $ (15,549 )     (46.8 )%
Sales and marketing
    22,534       24,145       (1,611 )     (6.7 )%
General and administrative
    20,356       12,039       8,317       69.1 %
Restructuring charges, executive severance and asset write-offs
    2,257       12,336       (10,079 )     (81.7 )%
 
Research and Development
 
Research and development expenses consist primarily of personnel costs, internally designed prototype material expenditures, and expenditures for outside engineering consultants, equipment and supplies required in developing and enhancing our products. For the year ended December 31, 2005, research and development expenses were $17.7 million, or 19% of revenue. This was a decrease of $15.5 million from research and development expenses in 2004, which were $33.2 million, or 24% of revenue. The reduction in research and development resulted from our decision in the quarter ended December 31, 2004 to cease investment in future development of our CMTS product line, decreased spending on research and development for the HAS products and the sale of our semiconductor division to ATI in March 2005.
 
Sales and Marketing
 
Sales and marketing expenses consist primarily of personnel costs, including salaries and commissions for sales personnel, salaries for marketing and support personnel, costs related to trade shows, consulting and travel. For the year ended December 31, 2005 sales and marketing expenses were $22.5 million or 25% of revenue. This was a $1.6 million decrease compared to 2004 where sales and marketing expenses were $24.1 million or 18% of revenue. However, sales and marketing expenses increased as a percentage of revenue from 2004 to 2005. The largest component of the decrease in total sales and marketing expenses was a $1.9 million reduction in compensation related expenses related to reductions in headcount, offset by a $0.9 million increase related to advertising and tradeshow expenses.
 
General and Administrative
 
General and administrative expenses consist primarily of personnel costs of administrative officers and support personnel, and legal, accounting and consulting fees. For the year ended December 31, 2005, general and administrative expenses were $20.4 million, or 22% of revenue. This was an increase of $8.3 million from general and administrative expenses in 2004, which were $12.0 million, or 9% of revenue. Factors that contributed to the increase included a $2.6 million net expense related to the Adelphia litigation settlement; $3.2 million related to the settlement of our shareholder class action and derivative litigation; an increase in outside legal fees of $2.5 million, of which $0.9 million related to the independent investigation and $1.0 million related to increased litigation expenses; and an increase of $0.2 million in financial audit fees.


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Restructuring Charges, Executive Severance and Asset Write-offs
 
Restructuring charges, executive severance and asset write-offs are summarized as follows (in thousands, except percentages):
 
                                 
    Year Ended
             
    December 31,     Variance in
    Variance in
 
    2005     2004     Dollars     Percent  
 
Restructuring charges
  $ 1,003     $ 6,784     $ (5,781 )     (85.2 )%
Executive severance
    15       3,451       (3,436 )     (99.6 )%
Long-lived assets written-off
    85       2,401       (2,316 )     (96.5 )%
                                 
Subtotal
    1,103       12,636       (11,533 )     (91.3 )%
Restructuring (recovery/change in estimate in prior year plans)
    1,154       (300 )     1,454       (484.7 )%
                                 
Restructuring charges, executive severance and asset write-offs
  $ 2,257     $ 12,336     $ (10,079 )     (81.7 )%
                                 
 
Restructuring
 
During 2005, we continued restructuring activities related to our decision to cease investment in our CMTS product line. In the quarters ended March 31, 2005 and June 30, 2005, we incurred net restructuring charges of $0.7 million and $0.3 million, respectively, related to employee termination costs.
 
In the first three quarters of 2005, we re-evaluated the charges for excess leased facilities accrued as part of the 2001 restructuring plan and the 2004 restructuring plan. During the three quarters ended September 30, 2005, we decreased the accrual by $0.3 million for the 2001 restructuring plan and increased the accrual by $0.9 million for the 2004 restructuring plan. During the fourth quarter of 2005, we incurred restructuring charges in the amount of $0.3 million related to excess leased facilities for the 2004 restructuring plan.
 
Net charges for restructuring that occurred in 2005 totaled $2.2 million, comprised of $1.0 million for employee terminations, $1.1 million for excess leased facilities and $0.1 million related to the aircraft lease.
 
As of December 31, 2005, $0.1 million remains accrued for the 2001 restructuring plan related to excess leased facilities, and $2.6 million remains accrued for the 2004 restructuring plan, which is comprised of $0.5 million for the aircraft lease and $2.1 million for excess leased facilities.
 
The reserve for leased facilities, net of sublease income, approximates the difference between our current costs for the excess leased facilities, which is our former principal executive offices located in Santa Clara, California, and the estimated income derived from subleasing the facilities, which was based on information derived by our brokers that estimated real estate market conditions as of the date of our implementation of the restructuring plan and the time it would likely take to fully sublease the excess leased facilities.
 
Executive Severance
 
In August 2004, we entered into an employment agreement with an executive officer who resigned effective December 31, 2004 with a termination date of February 3, 2005. We recorded a severance provision of $0.4 million related to termination costs for this officer in the quarter ended December 31, 2004. Most of the severance costs related to this officer were paid in the quarter ended March 31, 2005 with nominal amounts for employee benefits payable through the quarter ended March 31, 2006.
 
Asset Write-offs
 
There were no material asset write-offs in 2005. As a result of CMTS product line restructuring activities in 2004, we recognized a fixed asset impairment charge of $2.4 million. The impairment charge reflected a write-down of the assets’ carrying value to a fair value based on a third party valuation.


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Non-operating Expenses
 
Interest expense, net and other income, net were as follows (in thousands, except percentages):
 
                                 
    Year Ended
             
    December 31,     Variance in
    Variance in
 
    2005     2004     Dollars     Percent  
 
Interest expense, net
  $ (189 )   $ (1,090 )   $ 901       (82.7 )%
Other income, net
    1,155       1,031       124       12.0 %
 
Interest expense, net relates primarily to interest on our Notes, offset by interest income generated from investments in high-quality fixed income securities.
 
Other income, net is generally comprised of realized foreign currency gains and losses, realized gains or losses on investments, and income attributable to non-operational gains and losses.
 
Income Tax (Expense) Benefit
 
In 2005 we recorded an income tax expense of $0.1 million which was primarily related to foreign taxes, and in 2004 we recorded an income tax benefit of $0.1 million. The foreign tax expense of approximately $0.3 million in 2004 was offset by a tax benefit resulting principally from the reversal of tax accruals due to the sale of certain subsidiaries.
 
Litigation
 
See Item 3 — Legal Proceedings.
 
Off-Balance Sheet Financings and Liabilities
 
Other than lease commitments and unconditional purchase obligations incurred in the normal course of business, we do not have any off-balance sheet financing arrangements or liabilities, guarantee contracts, retained or contingent interests in transferred assets or any obligation arising out of a material variable interest in an unconsolidated entity. All of our majority-owned subsidiaries are included in the condensed consolidated financial statements.
 
Liquidity and Capital Resources
 
At December 31, 2006, we had $20.3 million in cash and cash equivalents and short-term investments compared to $101.3 million as of December 31, 2005. The reduction in cash and cash equivalents and short-term investments of $81.0 million since December 31, 2005 was primarily attributable to the repayment in March 2006 of $65.6 million in the aggregate principal amount of the Notes, including all accrued and unpaid interest and related fees, and the funding of operating activities.
 
On November 7, 2005, we announced that the filing of our periodic report on Form 10-Q for the quarter ended September 30, 2005 would be delayed pending completion of the accounting review. We were required under our Indenture, dated July 26, 2000 (Indenture), to file with the Commission and the trustee of our Notes all reports, information and other documents required pursuant to Section 13 or 15(d) of the Exchange Act. On January 12, 2006, holders of more than 25% of the aggregate principal amount of the Notes, in accordance with the terms of the Indenture, provided written notice to us that we were in default under the Indenture based on our failure to file our Form 10-Q for the quarter ended September 30, 2005. We were unable to cure the default within 60 days of the written notice, March 13, 2006, which triggered an Event of Default under the Indenture. The Event of Default enabled the holders of at least 25% in aggregate principal amount of Notes outstanding to accelerate the maturity of the Notes by written notice and declare the entire principal amount of the Notes, together with all accrued and unpaid interest thereon, to be due and payable immediately. On March 16, 2006, we received a notice of acceleration from holders of more than 25% of the aggregate principal amount of the Notes. On March 21, 2006, we paid in full the entire principal amount of the outstanding Notes, including all accrued and unpaid interest thereon and related fees, for a total of $65.6 million.


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Cash used in operating activities for year ended December 31, 2006 was $14.0 million compared to cash provided by operating activities of $2.6 million in the same period in 2005. For the year ended December 31, 2006, we incurred a $3.8 million net loss which included an $8.6 million non-cash gain related to the recognition of a deferred gain on the sale of ATI Technologies, Inc., a $2.5 million non-cash charge related to stock-based compensation expenses, and a $2.9 million non-cash charge related to inventory provision. During 2006, the cash used in operating activities was further affected by contributions to cash of $7.5 million from the decrease in other assets, $5.7 million from the decrease in inventory, and $3.0 million from the decrease of long-term cost of goods sold. These contributions were offset by a $12.9 million decrease in deferred revenue and a $5.3 million increase in other current assets. In 2005, the $2.6 million provided to cash was driven by a net loss of $27.0 million, offset by a net contribution of cash of $8.0 million from accounts receivable, $4.0 million from inventory, and a $12.6 million increase in deferred revenue. In 2004, the $39.7 million usage of cash was driven by the net loss of $47.1 million, a $11.9 million in increased inventory and a $17.4 million reduction in accounts payable offset by a $11.6 million non-cash inventory provision, a $8.4 million decrease in accounts receivable and an $11.9 million increase in deferred revenues.
 
On March 9, 2005, we sold certain of our cable modem semiconductor assets to ATI Technologies, Inc. (ATI). Under the terms of the agreement, ATI was required to pay us $7.0 million at the closing, with a balance of $7.0 million subject to our achieving milestones for certain conditions, services and deliverables up to June 9, 2006. Upon the closing, we received $8.6 million in cash, which was comprised of the $7.0 million for the initial payment and $1.9 million for having met the first milestone, minus $0.3 million to pay for Company funded retention bonuses for employees that accepted employment with ATI. In June 2006, ATI paid us $1.1 million from the amount that was released from escrow in June 2006 and we forfeited $0.8 million, the remaining amount that was held in escrow, for failing to obtain vendor author status for ATI with Cable Television Laboratories, Inc. (CableLabs) by June 9, 2006. Despite receiving cash payments for the sale of assets to ATI, we did not recognize the $9.9 million gain on the ATI transaction until the quarter ended June 30, 2006, based upon the completion of milestones and the termination of the supply arrangement between ATI and us. This gain represented the purchase price of $12.5 million, less transaction related costs of $2.6 million.
 
In connection with our operating lease arrangement to lease a corporate aircraft, we deposited and pledged an aggregate amount of $7.5 million in cash (Deposit) in 2004 with the aircraft lessor, General Electric Capital Corporation (GECC), to secure our obligations under the lease. In August 2004, we entered into an aircraft sublease, which terminated on January 14, 2007. On March 28, 2007, GECC returned to us approximately $6.8 million of the $7.5 million cash deposit held by GECC as collateral for the aircraft lease. GECC will retain $0.7 million in collateral (Repair Collateral) subject to GECC’s completion of repairs, tests, inspections, and corrections to the aircraft, which GECC has estimated will cost $0.6 million. The remaining amount of the Repair Collateral, if any, will be returned to us.
 
Investing activities consisted primarily of net purchases and sales of short-term investments. Cash provided by investing activities for the year ended December 31, 2006 was $58.5 million compared to cash used by investing activities of $19.6 million in the same period in 2005. The proceeds from the $61.0 million sale of short-term investments in the first quarter of 2006 were required to repay the Notes as described above. Cash provided by investing activities for the year ended December 31, 2004 was $50.8 million.
 
Cash used by financing activities of $65.1 million in the year ended December 31, 2006 was due to the repayment of $65.1 million of face value for the Notes. Cash provided by financing activities in the year ended December 31, 2005 was $3.1 million, due to proceeds from the exercise of stock options. Cash provided by financing activities for the year ended December 31, 2004 was $1.6 million.
 
We currently believe that our current unrestricted cash, cash equivalents and short-term investment balances will be sufficient to satisfy our cash requirements for at least the next 12 months. In order to achieve profitability in the future, we will need to increase revenues, primarily through sales of more profitable products, and decrease costs and operating expenses. These statements are forward-looking in nature and involve risks and uncertainties. Actual results may vary as a result of a number of factors, including those discussed under Item 1A — Risk Factors. We may need to raise additional funds in order to support more


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rapid expansion, develop new or enhanced services, respond to competitive pressures, acquire complementary businesses or technologies or respond to unanticipated requirements. We may seek to raise additional funds through private or public sales of securities, strategic relationships, bank debt, and financing under leasing arrangements or otherwise. If additional funds are raised through the issuance of equity securities, the percentage ownership of our current stockholders will be reduced, stockholders may experience additional dilution or such equity securities may have rights, preferences or privileges senior to those of the holders of our common stock. We cannot assure that additional financing will be available on acceptable terms, if at all. If adequate funds are not available or are not available on acceptable terms, we may be unable to continue operations, develop our products, take advantage of future opportunities or respond to competitive pressures or unanticipated requirements, which could have a material adverse effect on our business, financial condition and operating results.
 
Contractual Obligations
 
The following table summarizes our contractual obligations as of December 31, 2006, and the effect such obligations are expected to have on our liquidity and cash flows in future periods (in millions):
 
                                         
    Payments Due by Period  
          Less than
    1 - 3
    4 - 5
    After
 
    Total     1 Year     Years     Years     5 Years  
 
Unconditional purchase obligations
  $ 6.4     $ 6.4     $     $     $  
Operating lease obligations
    11.0       3.9       7.1              
                                         
Total
  $ 17.4     $ 10.3     $ 7.1     $     $  
                                         
 
We have unconditional purchase obligations to certain of our suppliers that support our ability to manufacture our products. The obligations require us to purchase minimum quantities of the suppliers’ products at a specified price. As of December 31, 2006, we had approximately $6.4 million of purchase obligations, of which $0.1 million is included in the Consolidated Balance Sheet as accrued vendor cancellation charges, and the remaining $6.3 million is attributable to open purchase orders. The remaining purchase obligations become payable at various times throughout 2007.
 
We entered into a lease agreement for $2.3 million to lease a facility of approximately 63,000 square feet from October 2006 through September 2009. We entered into a sub-sublease for $6.7 million to sub-sublease a facility with approximately 141,000 square feet from October 2006 through October 2009.
 
The following table presents other commercial commitments, primarily required to support operating leases (in millions):
 
                                         
    Amount of Commitment Expiration per Period  
          Less than
    1 - 3
    4 - 5
    After
 
    Total     1 Year     Years     Years     5 Years  
 
Deposits
  $ 7.5     $ 7.5     $     $     $  
Standby letters of credit
    0.4             0.4              
                                         
Total
  $ 7.9     $ 7.5     $ 0.4     $     $  
                                         
 
In 2002, we entered into an operating lease arrangement to lease a corporate aircraft. This lease arrangement was secured by a $9.0 million letter of credit. The letter of credit was reduced to $7.5 million in February 2003. During 2004, the $7.5 million letter of credit was converted to a cash deposit. This lease commitment is included in the table above. In March 2004, in connection with our worldwide restructuring, we notified GECC of our intentions to locate a purchaser for our remaining obligations under this lease. In August 2004, we entered into an agreement with a third party to sublease the corporate aircraft through December 31, 2006, which sublease was subsequently extended through January 14, 2007. On March 28, 2007, GECC returned to us approximately $6.8 million of the $7.5 million cash deposit held by GECC as collateral for the aircraft lease. GECC will retain $0.7 million in collateral (Repair Collateral) subject to GECC’s completion of repairs, tests, inspections, and corrections to the aircraft, which GECC has estimated


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will cost $0.6 million. The remaining amount of the Repair Collateral, if any, will be returned to us. As a result of our real estate lease commitments, we have $0.4 million of letters of credit outstanding.
 
Critical Accounting Policies
 
We consider certain accounting policies related to revenue recognition, deferred revenue and deferred cost of goods sold, allowance for doubtful accounts, inventory valuation, warranty reserves, restructuring, contingencies and income taxes to be critical policies due to the estimation processes involved in each. We discuss each of our critical accounting policies, in addition to certain less significant accounting policies, with senior members of management and the audit committee, as appropriate.
 
Revenue Recognition
 
In accordance with Staff Accounting Bulletin (SAB) No. 101, “Revenue Recognition” (SAB 101), as amended by SAB 104, for all products and services, we recognize revenue when persuasive evidence of an arrangement exists, delivery has occurred or services are rendered, the fee is fixed or determinable, and collectibility is reasonably assured. In instances where final acceptance of the product, system, or solution is specified by the customer, revenue is not recognized until all acceptance criteria have been met. Contracts and customer purchase orders are used to determine the existence of an arrangement. Delivery occurs when product is delivered to a common carrier. Certain products are delivered on a free-on-board (FOB) destination basis and the Company does not recognize revenue associated with these transactions until the delivery has occurred to the customers’ premises. We assess whether the fee is fixed or determinable based on the payment terms associated with the transaction and whether the sales price is subject to adjustment. We assess collectibility based primarily on the creditworthiness of the customer as determined by credit checks and analysis, as well as the customer’s payment history.
 
In establishing its revenue recognition policies for our products, we assess software development efforts, marketing and the nature of post contract support (PCS). Based on its assessment, we determined that the software in the HAS and CMTS products is incidental and therefore, we recognize revenue on HAS and CMTS products under SAB 101, as specifically amended by SAB 104. Additionally, based on our assessment of the DVS products, we determined that software was more than incidental, and therefore, we recognize revenue on the DVS products under American Institute of Certified Public Accountants Statement of Position (SOP) 97-2, “Software Revenue Recognition” (SOP 97-2) and SOP 81-1, “Accounting for Performance of Construction-Type and Certain Production-Type Contracts” (SOP 81-1).
 
We determined that the software in the DVS products is more than incidental because the DVS platforms contained multiple embedded software applications, the software is actively marketed and we have a practice of providing upgrades and enhancements for the software to its existing users periodically. While the software is not sold on a stand-alone basis with the ability to operate on a third party hardware platform, the software is marketed and sold separately in the form of software license keys to activate embedded software applications. Additionally, as part of our customer support contracts, we routinely provide our customers with unspecified software upgrades and enhancements.
 
When a sale involves multiple elements, such as sales of products that include services, the entire fee from the arrangement is allocated to each respective element based on its fair value and recognized when revenue recognition criteria for each element are met. Fair value for each element is established based on the sales price charged when the same element is sold separately. In order to recognize revenue from individual elements within a multiple element arrangement under SOP 97-2, we must establish vendor specific objective evidence (VSOE) of fair value for each element.
 
Prior to 2006, for DVS products, we determined that we did not establish VSOE of fair value for the undelivered element of PCS, which required us to recognize revenue and the cost of goods sold of both the hardware element and PCS element ratably over the period of the customer support contract. We amortized the cost of goods sold for DVS products ratably over the period of the customer support contract. Revenue and the related cost of goods sold for DVS products that contain multiple element arrangements in each quarter of 2003, 2004 and 2005 were restated to reflect this accounting policy.


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Beginning in the first quarter of 2006, we determined that we established VSOE of fair value of the PCS element for DVS product sales as a result of maintaining consistent pricing practices for PCS, including consistent pricing of renewal rates for PCS. For DVS products sold beginning in 2006 that contain a multiple element arrangement, we recognize revenue from the hardware component when all criteria of SAB 104 and SOP 97-2 have been met and revenue related to PCS element ratably over the period of the PCS.
 
We sell our products directly to broadband service providers, and to a lesser extent, resellers. Revenue arrangements with resellers are recognized when product meets all criteria of SAB 104 and SOP 97-2.
 
Deferred Revenue, Deferred Cost of Goods Sold
 
Deferred revenue and deferred cost of goods sold are a result of our recognizing revenues on the DVS under SOP 97-2. Under SOP 97-2, we must establish VSOE of fair value for each element of a multiple element arrangement. Until the first quarter of 2006, we did not establish VSOE of fair value for PCS when PCS was sold as part of a multiple element arrangement. As such, for DVS products sold with PCS, revenue and the cost of goods sold related to the delivered element, the hardware component, were deferred and recognized ratably over the period of the PCS.
 
Allowance for Doubtful Accounts
 
We perform ongoing credit evaluations of our customers and generally require no collateral. We evaluate our trade receivables based upon a combination of factors. Credit losses have historically been within management’s expectations. When we become aware of a customer’s inability to pay, such as in the case of bankruptcy or a decline in the customer’s operating results or financial position, we record an allowance to reduce the related receivable to an amount we reasonably believe is collectible. We maintain an allowance for potentially uncollectible accounts receivable based on an estimate of collectibility. We assess collectibility based on a number of factors, including history, the number of days an amount is past due (based on invoice due date), changes in credit ratings of customers, current events and circumstances regarding the business of our clients’ customers and other factors that we believe are relevant. If circumstances related to a specific customer change, our estimates of the recoverability of receivables could be further reduced. In addition, we made other adjustments to the allowance for doubtful accounts to offset the accounts receivable and related reserve related to customers who were granted extended payment terms, experiencing financial difficulties or where collectibility was not reasonably assured. Accordingly, we classify these customers as those with “extended payment terms” or with “collectibility issues.” At December 31, 2006 and 2005, the allowance for potentially uncollectible accounts was $0.2 million and $2.8 million, respectively.
 
Inventory Valuation
 
We value inventory at the lower of cost or market in accordance with Chapter 3 of Accounting Research Bulletin No. 43. Our policy for valuation of inventory and commitments to purchase inventory, including the determination of obsolete or excess inventory, requires us to perform a detailed assessment of inventory at each balance sheet date which includes a review of, among other factors, an estimate of future demand for products within specific time horizons, generally twelve months or less as well as product lifecycle and product development plans. Given the rapid technological change in the technology and communications equipment industries as well as significant, unpredictable changes in capital spending by our customers, we believe that assessing the value of inventory using generally a twelve-month time horizon is appropriate.
 
The estimates of future demand that we use in the valuation of inventory are the basis for the revenue forecast, which is also consistent with our short-term manufacturing plan. Based on this analysis, we reduce the cost of inventory that we specifically identify and consider obsolete or excessive to fulfill future sales estimates. We define excess inventory as inventory that will no longer be used in the manufacturing process. Excess inventory is generally defined as inventory in excess of projected usage, and is determined using our best estimate of future demand at the time, based upon information then available.
 
We purchase components from a variety of suppliers and use several contract manufacturers to provide manufacturing services for our products. During the normal course of business, in order to manage


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manufacturing lead times (often ranging from three to six months) and to help ensure adequate component supply, we enter into agreements with contract manufacturers and suppliers that either allow them to procure inventory based upon criteria as defined by us or that establish the parameters defining our component supply requirements. If we were to curtail or cease production of certain products or terminate these agreements, we may be liable for vendor cancellation charges.
 
We record losses on commitments to purchase inventory in accordance with Statement 10 of Chapter 4 of Accounting Research Bulletin No. 43. We accrue for vendor cancellation charges (which increase cost of goods sold) which represent management’s estimate of our financial exposure to vendors should our management curtail or cease production of certain products or terminate a vendor or supplier agreement. Estimates of exposure are determined using vendor inventory data. Should we change our short-term manufacturing plans such that further products or components would no longer be used, additional vendor cancellation charges may occur. If product is received and booked into inventory for which a vendor cancellation reserve had been previously established, the vendor cancellation reserve attributable to this inventory is transferred to the reserve for excess and obsolete inventory. At December 31, 2006, accrued vendor cancellation charges were $0.1 million, which are expected to become payable in the next three to six months. At December 31, 2005 and 2004, accrued vendor cancellation charges were $1.5 million and $0.5 million, respectively. From time to time we have been able to reverse portions of our vendor cancellation accrual as we were able to negotiate downward certain vendor cancellation charges. Such reversals of vendor cancellation charges cause a decrease in cost of goods sold in the period during which such charges are reversed. For the years ended December 31, 2006 and 2005, we reversed nominal amounts of vendor cancellation charges accrued at December 31, 2005 and 2004, respectively. For the year ended December 31, 2004, we reversed $2.4 million of vendor cancellation charges accrued at December 31, 2003 as a result of favorable negotiations with vendors and revised forecasts of demand.
 
Warranty Reserves
 
We provide a standard warranty for most of our products, ranging from one to five years from the date of purchase. We provide for the estimated cost of product warranties at the time revenue is recognized. Our warranty obligations are affected by product failure rates, material usage and service delivery costs incurred in correcting a product failure. Our estimate of costs to service our warranty obligations is based on historical experience and our expectation of future conditions. Should actual product failure rates, material usage or service delivery costs differ from our estimates, revision to the warranty liability would be required, resulting in decreased gross profits. Warranty reserves totaled $1.2 million and $2.9 million, for the years ended December 31, 2006 and 2005, respectively.
 
Restructuring and Other Related Charges
 
Between 2001 and 2005, we implemented restructuring programs to focus and streamline our business and reduce operating expenses. In connection with these programs, we reduced headcount, abandoned facilities and wrote off inventory. As a result of these actions, we recorded restructuring and other related charges primarily consisting of cash severance payments made to terminated employees, lease payments related to property abandoned as a result of our facilities consolidation and lease payments related to an aircraft lease. Each reporting period, we review these estimates based on the execution of our restructuring plans and changing market conditions, such as the real estate market and other assumptions and, as needed, record appropriate adjustments. To the extent that these assumptions change, the ultimate restructuring expenses could vary.
 
Contingencies
 
We are subject to proceedings, lawsuits and other claims related to labor, acquisitions and other matters. We are required to assess the likelihood of any adverse judgments or outcomes to these matters as well as potential ranges of probable losses. In order to establish any reserve for contingent obligations, the contingent obligation must be probable and quantifiable. A determination of the amount of reserves required, if any, for these contingencies is made after careful analysis of each individual issue. The required reserves may change


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in the future due to new developments in each matter or changes in approach such as a change in settlement strategy in dealing with these matters, any of which may result in higher net loss.
 
Income Taxes
 
We determine our provision for income taxes using the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future tax effects of temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Future tax benefits of tax loss and credit carryforwards are also recognized as deferred tax assets. We evaluate the realizability of our deferred tax assets by assessing the likelihood of future profitability and available tax planning strategies that could be implemented to realize our net deferred tax assets. The ultimate realization of our net deferred tax assets will require profitability. We have assessed the future profit plans and tax planning strategies together with the years of expiration of carryforward benefits, and have concluded that the deferred tax assets will be not be currently realized and have recorded a valuation allowance against the entire amount of the deferred tax assets. Should our operating performance improve future assessments could conclude that a reduction to the valuation allowance will be needed to reflect deferred tax assets. In addition, we operate within multiple taxing jurisdictions and are subject to tax audits in these jurisdictions. These audits can involve complex issues, which may require an extended period of time to resolve. While we believe we have provided adequately for our income tax liabilities in our consolidated financial statements, adverse determinations by taxing authorities could have a material adverse effect on our consolidated financial condition and results of operations.
 
Recently Issued Accounting Standards
 
In February 2006, the FASB issued SFAS No. 155, “Accounting for Certain Hybrid Financial Instruments” (SFAS 155) which amends SFAS No. 133, “Accounting for Derivative Instruments and Hedging Activities” (SFAS 133) and SFAS No. 140, “Accounting for Transfers and Servicing of Financial Assets and Extinguishments of Liabilities” (SFAS 140). Specifically, SFAS 155 amends SFAS 133 to permit fair value remeasurement for any hybrid financial instrument with an embedded derivative that otherwise would require bifurcation, provided the whole instrument is accounted for on a fair value basis. Additionally, SFAS 155 amends SFAS 140 to allow a qualifying special purpose entity to hold a derivative financial instrument that pertains to a beneficial interest other than another derivative financial instrument. SFAS 155 applies to all financial instruments acquired or issued after the beginning of an entity’s first fiscal year that begins after September 15, 2006, with early application allowed. The adoption of SFAS 155 is not expected to have a material impact on the Company’s results of operations or financial position.
 
In March 2006, the FASB issued SFAS No. 156, “Accounting for Servicing of Financial Assets” (SFAS 156), to simplify accounting for separately recognized servicing assets and servicing liabilities. SFAS 156 amends SFAS 140. Additionally, SFAS 156 applies to all separately recognized servicing assets and liabilities acquired or issued after the beginning of an entity’s fiscal year that begins after September 15, 2006, although early adoption is permitted. The adoption of SFAS 156 is not expected to have a material impact on our results of operations or financial position.
 
In July 2006, the FASB issued FASB Interpretation 48, “Accounting for Uncertainty in Income Taxes” (FIN 48) — an interpretation of FASB No. 109, “Accounting for Income Taxes.” FIN 48 prescribes a comprehensive model for recognizing, measuring, presenting and disclosing in the financial statements tax positions taken or expected to be taken on a tax return, including decisions on whether or not to file in a particular jurisdiction. FIN 48 clarifies the accounting for uncertainty in income taxes recognized in an enterprise’s financial statements in accordance with FASB Statement No. 109, “Accounting for Income Taxes.” The provisions of FIN 48 are to be applied to all tax positions upon initial adoption of this standard. Only tax positions that meet a “more-likely-than-not” recognition threshold at the effective date may be recognized or continue to be recognized upon adoption of FIN 48. The cumulative effect of applying the provisions of FIN 48 are reported as an adjustment to the opening balance of retained earnings FIN 48 is effective for years beginning after December 15, 2006, therefore, we will adopt FIN 48 as of January 1, 2007. We expect that adoption of this accounting standard will increase the level of disclosure that we provide regarding our tax


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positions. The adoption of FIN 48 is not expected to have a material impact on our consolidated financial position and results of operations.
 
In September 2006, the FASB issued SFAS No. 157, “Fair Value Measurements” (SFAS 157), which defines fair value, establishes guidelines for measuring fair value and expands disclosures regarding fair value measurements. SFAS 157 does not require any new fair value measurements but rather eliminates inconsistencies in guidance found in various prior accounting pronouncements. SFAS 157 is effective for fiscal years beginning after November 15, 2007. Earlier adoption is permitted, provided the company has not yet issued financial statements, including for interim periods, for that fiscal year. We are currently evaluating the impact of SFAS 157, but do not expect adoption to have a material impact on our consolidated financial position, results of operations or cash flows.
 
In September 2006, the Commission released Staff Accounting Bulletin (SAB) No. 108, “Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements” (SAB 108). SAB 108 provides guidance on how the effects of prior-year uncorrected financial statement misstatements should be considered in quantifying a current year misstatement. SAB 108 requires registrants to quantify misstatements using both an income statement (rollover) and balance sheet (iron curtain) approach and evaluate whether either approach results in a misstatement that, when all relevant quantitative and qualitative factors are considered, is material. If prior year errors that had been previously considered immaterial are now considered material based on either approach, no restatement is required as long as management properly applied its previous approach and all relevant facts and circumstances were considered. If prior years are not restated, the cumulative effect adjustment is recorded in opening retained earnings as of the beginning of the fiscal year of adoption. SAB 108 is effective for fiscal years ending on or after November 15, 2006. The adoption of SAB 108 did not have a material impact on our financial statements.
 
In February 2007, the FASB issued SFAS No. 159, “The Fair Value Option for Financial Assets and Liabilities” (SFAS 159), which includes an amendment to FASB Statement No. 115, “Accounting for Certain Investments in Debt and Equity Securities.” SFAS 159 provides companies with an irrevocable option to report selected financial assets and liabilities at fair value with changes in fair value reported in earnings. SFAS 159 is effective for fiscal years beginning after November 15, 2007. We are currently evaluating the impact of SFAS 159, but do not expect adoption to have a material impact on our consolidated financial position, results of operations or cash flows.
 
Item 7A.   Quantitative and Qualitative Disclosures About Market Risk
 
Interest Rate Risk.  Our exposure to market risk for changes in interest rates relates primarily to our investment portfolio. The primary objective of our investment activities is to preserve principal while maximizing yields without significantly increasing risk. This is accomplished by investing in widely diversified short-term investments, consisting primarily of investment grade securities, substantially all of which mature within the next twenty-four months. A hypothetical 50 basis point increase in interest rates would not have a material impact on the fair value of our available-for-sale securities.
 
Foreign Currency Risk.  A substantial majority of our revenue, expense and capital purchasing activity are transacted in U.S. dollars. However, we do enter into transactions from Belgium, United Kingdom, Hong Kong and Canada. If foreign currency rates were to fluctuate by 10% from the rates at December 31, 2006, our financial position, results of operations and cash flows would not be materially affected. However, we cannot guarantee that there will not be a material impact in the future.


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Item 8.   Financial Statements and Supplementary Data
 
TERAYON COMMUNICATION SYSTEMS, INC.
 
INDEX TO CONSOLIDATED FINANCIAL STATEMENTS
 
         
    Page
 
  70
  71
  72
  73
  74
  75


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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
 
To the Board of Directors and
Stockholders of Terayon Communication Systems, Inc.:
 
We have audited the accompanying consolidated balance sheets of Terayon Communication Systems, Inc. as of December 31, 2006 and 2005, and the related consolidated statements of operations, stockholders’ equity, and cash flows for each of the three years in the period ended December 31, 2006. Our audits also included the financial statement schedule listed in the Index at accompanying Item 15(a)(2). These financial statements and schedule are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements and schedule based on our audits.
 
We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.
 
In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of Terayon Communication Systems, Inc. as of December 31, 2006 and 2005, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2006 in conformity with accounting principles generally accepted in the United States of America. Also, in our opinion, the related financial statement schedule, when considered in relation to the basic financial statements taken as a whole, presents fairly, in all material respects, the information set forth therein.
 
As discussed in Note 2 to the Consolidated Financial Statements, the Company adopted the provisions of Statement of Financial Accounting Standards No. 123(R), “Share-Based Payment” (SFAS 123(R)) on January 1, 2006.
 
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the effectiveness of Terayon Communication Systems, Inc.’s internal control over financial reporting as of December 31, 2006, based on criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) and our report dated March 29, 2007 expressed an unqualified opinion on management’s assessment of internal control over financial reporting and an adverse opinion on the effectiveness of internal control over financial reporting.
 
/s/  Stonefield Josephson, Inc.
 
San Francisco, California
March 29, 2007


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TERAYON COMMUNICATION SYSTEMS, INC.
 
CONSOLIDATED BALANCE SHEETS
 
                 
    December 31,  
    2006     2005  
    (In thousands)  
 
ASSETS
Current assets:
               
Cash and cash equivalents
  $ 8,362     $ 28,867  
Short-term investments
    11,951       72,434  
Accounts receivable, net of allowance for doubtful accounts
    10,914       9,879  
Other current receivables
    1,296       1,606  
Inventory, net
    2,324       10,915  
Deferred cost of goods sold
    2,289       3,351  
Deposits
    8,248        
Other current assets
    1,532       3,427  
                 
Total current assets
    46,916       130,479  
Property and equipment, net
    3,309       3,915  
Restricted cash
    395       332  
Long-term deferred cost of goods sold
    1,338       4,351  
Other assets, net
    12       7,571  
                 
Total assets
  $ 51,970     $ 146,648  
                 
 
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
               
Accounts payable
  $ 5,495     $ 5,036  
Accrued payroll and related expenses
    3,650       2,105  
Deferred revenues
    9,329       13,952  
Deferred gain on asset sale
          8,631  
Accrued warranty expenses
    1,246       2,887  
Accrued restructuring and executive severance
    149       1,305  
Accrued vendor cancellation charges
    124       1,508  
Accrued other liabilities
    4,071       6,287  
Interest payable
          1,356  
Current portion of subordinated convertible notes
          65,367  
                 
Total current liabilities
    24,064       108,434  
Long-term obligations
    1,399       1,455  
Accrued restructuring and executive severance
    193       1,381  
Long-term deferred revenue
    6,492       14,721  
                 
Total liabilities
    32,148       125,991  
                 
Commitments and contingencies (Notes 4 and 8) 
               
Stockholders’ equity:
               
Preferred stock, $0.001 par value: 5,000,000 shares authorized; no shares issued and outstanding
           
Common stock: $0.001 par value, 200,000,000 shares authorized Issued — 77,793,844 in 2006 and 77,794,186 in 2005 Outstanding — 77,637,177 in 2006 and 2005
    78       78  
Additional paid-in capital
    1,089,278       1,086,817  
Accumulated deficit
    (1,066,269 )     (1,062,438 )
Treasury stock, at cost; 156,009 shares
    (773 )     (773 )
Accumulated other comprehensive loss
    (2,492 )     (3,027 )
                 
Total stockholders’ equity
    19,822       20,657  
                 
Total liabilities and stockholders’ equity
  $ 51,970     $ 146,648  
                 
 
See accompanying notes.


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TERAYON COMMUNICATION SYSTEMS, INC.
 
CONSOLIDATED STATEMENTS OF OPERATIONS
 
                         
    Year Ended December 31,  
    2006     2005     2004  
    (In thousands, except per share data)  
 
Revenues
  $ 76,430     $ 90,664     $ 136,484  
Cost of goods sold
    30,848       55,635       101,887  
                         
Gross profit
    45,582       35,029       34,597  
Operating expenses:
                       
Research and development
    17,377       17,650       33,199  
Sales and marketing
    17,897       22,534       24,145  
General and administrative
    24,944       20,356       12,039  
Restructuring charges, executive severance and asset write-offs
    199       2,257       12,336  
                         
Total operating expenses
    60,417       62,797       81,719  
                         
Loss from operations
    (14,835 )     (27,768 )     (47,122 )
Gain on sale of assets
    9,984              
Interest income (expense), net
    1,178       (189 )     (1,090 )
Other income, net
    22       1,155       1,031  
                         
Loss before income tax expense
    (3,651 )     (26,802 )     (47,181 )
Income tax benefit (expense)
    (180 )     (149 )     76  
                         
Net loss
  $ (3,831 )   $ (26,951 )   $ (47,105 )
                         
Basic and diluted net loss per share
  $ (0.05 )   $ (0.35 )   $ (0.62 )
                         
Shares used in computing basic and diluted net loss per share
    77,637       77,154       75,751  
                         
 
See accompanying notes.


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TERAYON COMMUNICATION SYSTEMS, INC.
 
CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
 
                                                                         
                                  Accumulated
                   
                                  Other
                Total
 
    Common Stock     Additional
    Accumulated
    Deferred
    Comprehensive
    Treasury Stock     Stockholders’
 
    Shares     Amount     Paid-in Capital     Deficit     Compensation     Income (loss)     Shares     Amount     Equity  
    (In thousands, except share amounts)  
 
Balance at December 31, 2003
    74,874,001     $ 75     $ 1,082,034     $ (988,382 )   $ (22 )   $ (2,368 )     156,009     $ (773 )   $ 90,563  
Exercise of option for cash to purchase common stock
    225,645               494                                               494  
Re-valuation of options to non-employees
                    (5 )             5                                  
Amortization of deferred compensation
                                    17                               17  
Issuance of common stock for Employee Stock Purchase Plan
    1,197,419       1       1,186                                               1,187  
Comprehensive loss:
                                                                       
Increase to unrealized gain on short term investments
                                            (520 )                     (520 )
Cumulative translation adjustment
                                            307                       307  
Net loss
                            (47,105 )                                     (47,105 )
                                                                         
Comprehensive Loss
                                                                    (47,319 )
                                                                         
Balance at December 31, 2004
    76,297,065       76       1,083,709       (1,035,487 )           (2,582 )     156,009       (773 )     44,943  
Exercise of option for cash to purchase common stock
    1,340,112       2       3,056                                               3,058  
Accelerated Vesting of Options
                    52                                               52  
Comprehensive loss:
                                                                       
Increase to unrealized gain on short term investments
                                            16                       16  
Cumulative translation adjustment
                                            (461 )                     (461 )
Net loss
                            (26,951 )                                     (26,951 )
                                                                         
Comprehensive Loss
                                                                    (27,396 )
                                                                         
Balance at December 31, 2005
    77,637,177       78       1,086,817       (1,062,438 )           (3,027 )     156,009       (773 )     20,657  
Stock based compensation expense
                    2,461                                               2,461  
Comprehensive loss:
                                                                       
Increase to unrealized gain on short term investments
                                            425                       425  
Cumulative translation adjustment
                                            110                       110  
Net loss
                            (3,831 )                                     (3,831 )
                                                                         
Comprehensive Loss
                                                                    (2,746 )
                                                                         
Balance at December 31, 2006
    77,637,177     $ 78     $ 1,089,278     $ (1,066,269 )   $     $ (2,492 )     156,009     $ (773 )   $ 19,822  
                                                                         
 
See accompanying notes.


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TERAYON COMMUNICATION SYSTEMS, INC.
 
CONSOLIDATED STATEMENTS OF CASH FLOWS
 
                         
    Year Ended December 31,  
    2006     2005     2004  
 
Cash flows from operating activities:
                       
Net loss
  $ (3,831 )   $ (26,951 )   $ (47,105 )
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
                       
Depreciation and amortization
    2,059       3,148       5,860  
Stock based compensation
    2,461              
Amortization of subordinated convertible notes premium
    (286 )     (221 )     (221 )
Amortization of deferred compensation
                17  
Accretion of discounts on short-term investments
    (126 )     (114 )     (107 )
Realized gains on sales of short-term investments
                (2 )
Inventory provision
    2,940       2,732       11,550  
Provision for doubtful accounts
    (25 )     132       590  
Restructuring provision
          2,068       6,513  
Write-off of fixed assets
    1,092       602       3,045  
Warranty provision
    673       (165 )     3,075  
Vendor cancellation provision
    (1,040 )     1,143       387  
Recognition of deferred gain on asset sale
    (8,631 )            
Changes in operating assets and liabilities:
                       
Accounts receivable, net
    (700 )     7,986       8,404  
Inventory
    5,651       4,019       (11,939 )
Other current assets
    (5,291 )     (3,262 )     (311 )
Long-term deferred cost of goods sold
    3,013       (2,543 )     (1,458 )
Other assets
    7,496       2,896       2,172  
Accounts payable
    459       (2,810 )     (17,440 )
Accrued payroll and related expenses
    1,545       (2,829 )     (1,984 )
Deferred revenues
    (12,852 )     12,624       11,852  
Deferred gain on asset sale
    (2,314 )     8,631        
Accrued warranty expenses
    (2,344 )     (1,618 )     (3,634 )
Accrued restructuring charges
    (344 )     (4,507 )     (4,355 )
Accrued vendor cancellation charges
          (156 )     (2,735 )
Other accrued liabilities
    (3,628 )     1,793       (1,830 )
                         
Net cash provided by (used in) operating activities
    (14,023 )     2,598       (39,656 )
                         
Cash flows from investing activities:
                       
Purchases of short-term investments
          (44,707 )     (89,957 )
Proceeds from sales and maturities of short-term investments
    61,034       26,919       143,480  
Purchases of property and equipment
    (2,545 )     (1,811 )     (2,700 )
                         
Net cash provided by (used in) investing activities
    58,489       (19,599 )     50,823  
                         
Cash flows from financing activities:
                       
Principal payments on capital leases
                (126 )
Debt extinguishment of convertible debt
    (65,081 )            
Proceeds from issuance of common stock
          3,110       1,682  
                         
Net cash provided by (used for) financing activities
    (65,081 )     3,110       1,556  
                         
Effect of foreign currency exchange rate changes
    110       (460 )     307  
                         
Net decrease in cash and cash equivalents
    (20,505 )     (14,351 )     13,030  
Cash and cash equivalents at beginning of year
    28,867       43,218       30,188  
                         
Cash and cash equivalents at end of year
  $ 8,362     $ 28,867     $ 43,218  
                         
Supplemental disclosures of cash flow information:
                       
Cash paid for income taxes
  $ 36     $ 111     $ 138  
                         
Cash paid for interest
  $ 1,817     $ 3,254     $ 3,268  
                         
Non-cash investing and financing activity:
                       
Deferred compensation relating to common stock issued to non-employee
  $     $     $ 17  
                         


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TERAYON COMMUNICATION SYSTEMS, INC.
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
TERAYON COMMUNICATION SYSTEMS, INC.
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
 
Note 1.   Organization
 
Description of Business
 
Terayon Communication Systems, Inc. (Company) was incorporated under the laws of the State of California on January 20, 1993. In June 1998, the Company reincorporated in the State of Delaware.
 
The Company develops, markets and sells digital video equipment to network operators and content aggregators who offer video services.
 
In 2004, the Company refocused to make digital video the core of its business. As part of this strategic refocus, the Company elected to continue selling its home access solutions (HAS) product, including cable modems, embedded multimedia terminal adapters (eMTA) and home networking devices, but ceased future investment in its cable modem termination systems (CMTS) product line. In January 2006, the Company announced it was discontinuing its HAS product line.
 
Note 2.   Summary of Significant Accounting Policies
 
Basis of Consolidation
 
The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated.
 
Use of Estimates
 
The preparation of the consolidated financial statements in conformity with generally accepted accounting principles (GAAP) in the United States requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Estimates are based on historical experience, input from sources outside of the Company, and other relevant facts and circumstances. Actual results could differ from those estimates. Areas that are particularly significant include the Company’s revenue recognition policy, the valuation of its accounts receivable and inventory, warranty obligations, accrued vendor cancellation charges, the assessment of recoverability and the measurement of impairment of fixed assets, and the recognition of restructuring liabilities.
 
Foreign Currency Translation
 
The Company records the effect of foreign currency translation in accordance with Statement of Financial Accounting Standards (SFAS) No. 52, “Foreign Currency Translation.” For operations outside the United States that prepare financial statements in currencies other than the U.S. dollar, results of operations and cash flows are translated at average exchange rates during the period, and assets and liabilities are translated at end-of-period exchange rates. Translation adjustments are included as a separate component of accumulated other comprehensive loss in stockholders’ equity. Realized foreign currency transaction gains and losses are included in results of operations as incurred.
 
Treasury Stock
 
The Company accounts for treasury stock under the cost method and discloses treasury stock as a separate line item in the shareholders’ equity section of the consolidated balance sheet.
 
Concentrations of Credit Risk, Customers, Suppliers and Products
 
The Company performs ongoing credit evaluations of its customers and generally requires no collateral. Credit losses have historically been within management’s expectations. The Company maintains an allowance for potentially uncollectible accounts receivable based on an assessment of collectibility. The Company


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TERAYON COMMUNICATION SYSTEMS, INC.
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

assesses collectibility based on a number of factors, including past history, the number of days an amount is past due (based on invoice due date), changes in credit ratings of customers, current events and circumstances regarding the business of the Company’s clients’ customers and other factors that the Company believes are relevant. At December 31, 2006 and 2005, the allowance for potentially uncollectible accounts was $0.2 million and $2.8 million, respectively. A relatively small number of customers account for a significant percentage of the Company’s revenues and accounts receivable. The Company expects the sale of its products to a limited number of customers and resellers to continue to account for a high percentage of revenues.
 
The Company relies on single source suppliers of materials and labor for the significant majority of its product inventory. Should the Company’s current suppliers not produce and deliver inventory for the Company to sell on a timely basis, operating results may be adversely impacted.
 
The Company places its cash and cash equivalents in several financial institutions and limits the amount of credit exposure through diversification and by investing in only high-grade government and commercial issuers.
 
The Company invests its excess cash in debt instruments of governmental agencies, and corporations with credit ratings of AA/AA or better, or A1/P1 or better, respectively. The Company has established guidelines relative to diversification and maturities that attempt to maintain safety and liquidity. The Company has not experienced any significant losses on its cash equivalents or short-term investments.
 
Revenue Recognition
 
In accordance with Staff Accounting Bulletin (SAB) No. 101, “Revenue Recognition” (SAB 101), as amended by SAB 104, for all products and services, the Company recognizes revenue when persuasive evidence of an arrangement exists, delivery has occurred or services were rendered, the fee is fixed or determinable, and collectibility is reasonably assured. In instances where final acceptance of the product, system, or solution is specified by the customer, revenue is not recognized until all acceptance criteria have been met. Contracts and customer purchase orders are used to determine the existence of an arrangement. Delivery occurs when product is delivered to a common carrier. Certain products are delivered on a free-on-board (FOB) destination basis and the Company does not recognize revenue associated with these transactions until the delivery has occurred to the customers’ premises. The Company assesses whether the fee is fixed or determinable based on the payment terms associated with the transaction and whether the sales price is subject to adjustment. The Company assesses collectibility based primarily on the creditworthiness of the customer as determined by credit checks and analysis, as well as the customer’s payment history.
 
In establishing its revenue recognition policies for its products, the Company assesses software development efforts, marketing and the nature of post contract support (PCS). Based on its assessment, the Company determined that the software in the HAS and CMTS products is incidental and therefore, the Company recognizes revenue on HAS and CMTS products under SAB 101, as specifically amended by SAB 104. Additionally, based on its assessment of the DVS products, the Company determined that software was more than incidental, and therefore, the Company recognizes revenue on the DVS products under American Institute of Certified Public Accountants Statement of Position (SOP) 97-2, “Software Revenue Recognition” (SOP 97-2) and SOP 81-1, “Accounting for Performance of Construction-Type and Certain Production-Type Contracts” (SOP 81-1).
 
The Company determined that the software in the DVS products is more than incidental because the DVS platforms contained multiple embedded software applications, the software is actively marketed and the Company has a practice of providing upgrades and enhancements for the software to its existing users periodically. While the software is not sold on a stand-alone basis with the ability to operate on a third party hardware platform, the software is marketed and sold separately in the form of software license keys to


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TERAYON COMMUNICATION SYSTEMS, INC.
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

activate embedded software applications. Additionally, as part of the Company’s customer support contracts, the Company routinely provides its customers with unspecified software upgrades and enhancements.
 
When a sale involves multiple elements, such as sales of products that include services, the entire fee from the arrangement is allocated to each respective element based on its fair value and recognized when revenue recognition criteria for each element are met. Fair value for each element is established based on the sales price charged when the same element is sold separately. In order to recognize revenue from individual elements within a multiple element arrangement under SOP 97-2, the Company must establish vendor specific objective evidence (VSOE) of fair value for each element.
 
Prior to 2006, for the DVS product, the Company determined that it did not establish VSOE of fair value for the undelivered element of PCS, which required the Company to amortize the sale price of both the hardware element and PCS element ratably over the period of the customer support contract. The Company amortized the cost of goods sold for the DVS product ratably over the period of the customer support contract. Revenue and the related cost of goods sold for DVS products that contain multiple element arrangements in each quarter of 2004 and 2005 were deferred and recognized ratably over the contract service period.
 
Beginning in the first quarter of 2006, the Company determined that it established VSOE of fair value of the PCS element for DVS product sales as a result of maintaining consistent pricing practices for PCS, including consistent pricing of renewal rates for PCS. For DVS products sold beginning in 2006 that contain a multiple element arrangement, the Company recognizes revenue from the hardware component when all criteria of SAB 104 and SOP 97-2 have been met and revenue related to PCS element ratably over the period of the PCS.
 
The Company sells its products directly to broadband service providers, and to a lesser extent, resellers. Revenue arrangements with resellers are recognized when product meets all criteria of SAB 104 and SOP 97-2.
 
Deferred Revenue, Deferred Cost of Goods Sold
 
Deferred revenue and deferred cost of goods sold are a result of the Company recognizing revenues on the DVS product under SOP 97-2. Under SOP 97-2, the Company must establish VSOE of fair value for each element of a multiple element arrangement. Until the first quarter of 2006, the Company did not establish VSOE of fair value for PCS when PCS was sold as part of a multiple element arrangement. As such, for DVS products sold with PCS, revenue and the cost of goods sold related to the delivered element, the hardware component, were deferred and recognized ratably over the period of the PCS.
 
Accounts Receivable, Net of Allowance for Doubtful Accounts
 
The Company performs ongoing credit evaluations of its customers and generally require no collateral. The Company evaluates its trade receivables based upon a combination of factors. Credit losses have historically been within management’s expectations. When the Company becomes aware of a customer’s inability to pay, such as in the case of bankruptcy or a decline in the customer’s operating results or financial position, it records an allowance to reduce the related receivable to an amount it reasonably believes is collectible. The Company maintains an allowance for potentially uncollectible accounts receivable based on an estimate of collectibility. The Company assesses collectibility based on a number of factors, including history, the number of days an amount is past due (based on invoice due date), changes in credit ratings of customers, current events and circumstances regarding the business of its clients’ customers and other factors that it believes are relevant. If circumstances related to a specific customer change, its estimates of the recoverability of receivables could be further altered. In addition, the Company made other adjustments to the allowance for doubtful accounts to offset the accounts receivable and related reserve related to customers who were granted extended payment terms, experiencing financial difficulties or where collectibility was not reasonably assured.


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TERAYON COMMUNICATION SYSTEMS, INC.
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Accordingly, the Company classifies these customers as those with “extended payment terms” or with “collectibility issues.”
 
Research and Development Expenses
 
With the exception of the series of contractual arrangements with Thomson Broadcast entered into to develop a customized product, research and development expenses are charged to expense as incurred. As a part of the restatement, the Company recognized revenue under this series of contractual arrangements in accordance with SOP 97-2, SAB 104 and SOP 81-1. As a result, all revenue and research and development expenses associated with the contract were recognized in the quarter ended December 31, 2005. The Company generally does not engage in project-based contracts with its customers that may result in the deferral of research and development expenditures in future periods.
 
Shipping and Handling Costs
 
Costs related to shipping and handling are included in cost of goods sold for all periods presented.
 
Advertising Expenses
 
The Company accounts for advertising costs as expense in the period in which they are incurred. Advertising expense for the years ended December 31, 2006, 2005 and 2004 was $0.3 million, $0.6 million and $0.1 million, respectively.
 
Net Loss Per Share
 
Shares used in the calculation of basic and diluted net loss per share are as follows (in thousands, except per share data):
 
                         
    Year Ended December 31,  
    2006     2005     2004  
 
Net loss
  $ (3,831 )   $ (26,951 )   $ (47,105 )
                         
Basic and diluted net loss per share
  $ (0.05 )   $ (0.35 )   $ (0.62 )
                         
Shares used in computing basic and diluted net loss per share
    77,637       77,154       75,751  
                         
 
Options to purchase 12,169,709, 13,031,986 and 16,802,838 shares of common stock were outstanding at December 31, 2006, 2005 and 2004, respectively. These common stock equivalents were not included in the computation of diluted net loss per share since the effect would have been anti-dilutive. There were no warrants outstanding at December 31, 2006, 2005 and 2004.
 
Cash, Cash Equivalents and Short-Term Investments
 
The Company invests its excess cash in money market accounts and debt instruments and considers all highly liquid debt instruments purchased with an original maturity of 90 days or less to be cash equivalents. Investments with an original maturity at the time of purchase of over three months are classified as short-term investments regardless of maturity date as all investments are classified as available-for-sale and can be readily liquidated to meet current operational needs.
 
The Company determines impairment related to its debt and equity investments in accordance with SFAS No. 115, “Accounting for Certain Investments in Debt and Equity Securities,” and SAB 59, “Accounting for Noncurrent Marketable Equity Securities,” which provide guidance on determining when an investment is other-than-temporarily impaired. Applying this guidance requires judgment. In making this judgment, the Company evaluates, among other factors, the duration and extent to which the fair value of an investment is


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TERAYON COMMUNICATION SYSTEMS, INC.
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

less than its cost, the financial health of and business outlook for the investee, including factors such as industry and sector performance, changes in technology, and operational and financing cash flow, available financial information and the Company’s intent and ability to hold the investment. The Company also relies upon guidance from Financial Accounting Standards Board (FASB), Emerging Issues Task Force (EITF) 03-01 “The Meaning of Other-Than-Temporary Impairment and Its Application to Certain Investments,” in determining possible impairment as it relates to its debt investments. As of December 31, 2006, the Company had approximately $49,000 in unrealized losses on cash, cash equivalents and short term investments in Other Comprehensive Loss on the Consolidated Balance Sheet. The unrealized losses relating to investments in federal agency securities were caused by interest rate increases. The Company purchased these securities at par, and the contractual cash flows of these investments are guaranteed by an agency of the U.S. government. Accordingly, it is expected that the securities would not be settled at a price less than the amortized cost of the Company’s investment. Because the decline in market value is attributable to changes in interest rates and not credit quality and because the Company has the ability and intent to hold these investments until a recovery of fair value, which may be at maturity, the Company does not consider these investments to be other-than-temporarily impaired at December 31, 2006. Further the Company has a history of holding these types of investments to maturity and assesses this issue quarterly.
 
The Company’s short-term investments, which consist primarily of commercial paper, U.S. government and U.S. government agency obligations and fixed income corporate securities are classified as available-for-sale and are carried at fair market value. Realized gains and losses and declines in value judged to be other-than-temporary on available-for-sale securities are included in interest income. The cost of securities sold is based on the specific identification method. The Company had no material investments in short-term equity securities at December 31, 2006 and 2005.
 
Other Current Receivables
 
As of December 31, 2006 and 2005, other current receivables are primarily composed of interest, taxes, and non-trade receivables, and included approximately $0.5 million and $0.2 million, respectively, due from contract manufacturers for raw materials purchased from the Company.
 
Inventory
 
Inventory is stated at the lower of cost (first-in, first-out) or market. The components of inventory are as follows (in thousands):
 
                 
    Year Ended December 31,  
    2006     2005  
 
Raw materials
  $ 203     $ 58  
Work-in-process and Finished goods
    2,121       10,857  
                 
Total
  $ 2,324     $ 10,915  
                 
 
The Company records losses on commitments to purchase inventory in accordance with Statement 10 of Chapter 4 of Accounting Research Bulletin No. 43. The Company’s policy for valuation of inventory and commitments to purchase inventory, including the determination of obsolete or excess inventory, requires it to perform a detailed assessment of inventory at each balance sheet date, which includes a review of, among other factors, an estimate of future demand for products within specific time horizons, generally twelve months or less as well as product lifecycle and product development plans. Given the rapid change in the technology and communications equipment industries as well as significant, unpredictable changes in capital spending by the Company’s customers, the Company believes that assessing the value of inventory using generally a twelve-month time horizon is appropriate.


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TERAYON COMMUNICATION SYSTEMS, INC.
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

 
The estimates of future demand that the Company uses in the valuation of inventory are the basis for the revenue forecast. Based on this analysis, the Company reduces the cost of inventory that it specifically identifies and considers obsolete or excessive to fulfill future sales estimates. Excess inventory is generally defined as inventory in excess of projected usage, and is determined using the Company’s best estimate of future demand at the time, based upon information then available.
 
Deposits
 
As of December 31, 2006, deposits primarily consisted of $7.5 million related to the corporate aircraft and $0.7 related to professional services retainers.
 
Property and Equipment
 
Property and equipment are carried at cost less accumulated depreciation and amortization. Property and equipment are depreciated for financial reporting purposes using the straight-line method over the estimated useful lives, generally three to seven years. Leasehold improvements are amortized using the straight-line method over the shorter of the useful lives of the assets or the terms of the leases. In 2006, the Company recorded $1.6 million in leasehold improvements on the facility it leased for its corporate headquarters in August 2006. The recoverability of the carrying amount of property and equipment is assessed based on estimated future undiscounted cash flows, and if an impairment exists, the charge to operations is measured as the excess of the carrying amount over the fair value of the assets. Based upon this method of assessing recoverability, the Company recorded $1.1 million, $0.6 million and $3.0 million in disposals and asset impairments primarily related to restructuring activities for the years ended December 31, 2006, 2005 and 2004, respectively.
 
Property and equipment are as follows (in thousands):
 
                 
    Year Ended
 
    December 31,  
    2006     2005  
 
Software and computers
  $ 10,742     $ 11,117  
Furniture and fixtures
    436       357  
Office equipment
    92       175  
Leasehold improvements
    1,615       2,455  
Machinery and equipment
    13,042       14,231  
                 
Property and equipment
    25,927       28,335  
Accumulated depreciation and amortization
    (22,618 )     (24,420 )
                 
Property and equipment, net
  $ 3,309     $ 3,915  
                 
 
Depreciation expense for the years ended December 31, 2006, 2005 and 2004 was $1.8 million, $3.1 million and $5.9 million, respectively.
 
Restricted Cash
 
Restricted cash at December 31, 2006 and 2005 primarily relates to securing real estate leases.
 
Other Assets, Net
 
Other assets, net as of December 31, 2006 consisted of non-current deposits related to a facility lease. As of December 31, 2005, other assets, net consisted primarily of a prepaid licensing agreement and a deposit related to the Company’s corporate aircraft lease, respectively.


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TERAYON COMMUNICATION SYSTEMS, INC.
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

 
Warranty Obligations
 
The Company provides a standard warranty for most of its products, ranging from one to five years from the date of purchase. The Company provides for the estimated cost of product warranties at the time revenue is recognized. The Company’s warranty obligation is affected by product failure rates, material usage and service delivery costs incurred in correcting a product failure. Expense estimates are based on historical experience and expectation of future conditions. See Note 13, “Product Warranty.”
 
Stock-Based Compensation
 
On January 1, 2006, the Company adopted Statement of Financial Accounting Standards (SFAS) No. 123(R) which is a revision of SFAS 123, “Share-Based Payment” (SFAS 123(R)), which requires the measurement and recognition of compensation expense for all share-based payment awards made to employees and directors, including employee stock options and employee stock purchases related to the Employee Stock Purchase Plan based on estimated fair values. SFAS 123(R) supersedes the Company’s previous accounting under Accounting Principles Board (APB) Opinion 25, “Accounting for Stock Issued to Employees” (APB 25), for periods beginning January 1, 2006. In March 2005, the Commission issued SAB No. 107, “Share-based Payment” (SAB 107), relating to SFAS 123(R). SAB 107 provides guidance on the initial implementation of SFAS 123(R). In particular, the statement includes guidance related to share-based payment awards with non-employees, valuation methods and selecting underlying assumptions such as expected volatility and expected term. It also gives guidance on the classification of compensation expense associated with share-based payment awards and accounting for the income tax effects of share-based payment awards upon the adoption of SFAS 123(R). The Company has applied the provisions of SAB 107 in its adoption of SFAS 123(R).
 
Under the modified prospective method of adoption for SFAS 123(R), the compensation cost recognized by the Company beginning in 2006 includes (a) compensation cost for all equity incentive awards granted prior to, but not yet vested as of January 1, 2006, based on the grant-date fair value estimated in accordance with the original provisions of SFAS No. 123, “Accounting for Stock-Based Compensation” (SFAS 123), and (b) compensation cost for all equity incentive awards granted on or subsequent to January 1, 2006, based on the grant-date fair value estimated in accordance with the provisions of SFAS 123(R). The Company uses the straight-line attribution method to recognize share-based compensation costs over the service period of the award. Upon exercise, cancellation, or expiration of stock options, deferred tax assets for options with multiple vesting dates are eliminated for each vesting period on a first-in, first-out basis as if each vesting period was a separate award.
 
Options currently granted by the Company generally expire six years from the grant date and vest over a three year period. Options granted prior to the second quarter of 2005 generally expire ten years from the grant date and vest over a four to five year period. The Company may use other types of equity incentives, such as restricted stock and stock appreciation rights. The Company’s equity incentive awards also allow for performance-based vesting.
 
On November 10, 2005, the FASB issued FASB Staff Position No. FAS 123(R)-3, “Transition Election Related to Accounting for Tax Effects of Share-Based Payment Awards” (FAS 123(R)-3). The Company has elected to adopt the alternative transition method provided in FAS 123(R)-3 for calculating the tax effects of stock-based compensation pursuant to SFAS 123(R). The alternative transition method includes simplified methods to establish the beginning balance of the additional paid-in capital pool (APIC Pool) related to the tax effects of employee stock-based compensation, and to determine the subsequent impact on the APIC Pool and Consolidated Statements of Cash Flows of the tax effects of employee stock-based compensation awards that are outstanding upon adoption of SFAS 123(R).
 
Share-based compensation recognized in 2006 as a result of the adoption of SFAS 123(R) as well as share-based compensation calculated for pro forma disclosures according to the original provisions of


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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

SFAS 123 for periods prior to the adoption of SFAS 123(R) use the Black-Scholes valuation methodologies for estimating fair value of options granted under the Company’s equity incentive plans and rights to acquire stock granted under the Company’s stock participation plan.
 
Accumulated Other Comprehensive Loss
 
Accumulated other comprehensive loss presented in the accompanying consolidated balance sheets and consolidated statements of stockholders’ equity consists of net unrealized gain (loss) on cash equivalents and short-term investments and accumulated net foreign currency translation losses.
 
The following are the components of accumulated other comprehensive loss (in thousands):
 
                 
    Year Ended December 31,  
    2006     2005  
 
Cumulative translation adjustments, net
  $ (2,443 )   $ (2,554 )
Unrealized loss on available-for-sale investments, net
    (49 )     (473 )
                 
Total accumulated other comprehensive loss
  $ (2,492 )   $ (3,027 )
                 
 
Reclassifications
 
Certain prior year amounts have been reclassified to conform to current year presentation.
 
Recently Issued Accounting Standards
 
In February 2006, the FASB issued SFAS No. 155, “Accounting for Certain Hybrid Financial Instruments” (SFAS 155) which amends SFAS No. 133, “Accounting for Derivative Instruments and Hedging Activities” (SFAS 133) and SFAS No. 140, “Accounting for Transfers and Servicing of Financial Assets and Extinguishments of Liabilities” (SFAS 140). Specifically, SFAS 155 amends SFAS 133 to permit fair value remeasurement for any hybrid financial instrument with an embedded derivative that otherwise would require bifurcation, provided the whole instrument is accounted for on a fair value basis. Additionally, SFAS 155 amends SFAS 140 to allow a qualifying special purpose entity to hold a derivative financial instrument that pertains to a beneficial interest other than another derivative financial instrument. SFAS 155 applies to all financial instruments acquired or issued after the beginning of an entity’s first fiscal year that begins after September 15, 2006, with early application allowed. The adoption of SFAS 155 is not expected to have a material impact on the Company’s results of operations or financial position.
 
In March 2006, the FASB issued SFAS No. 156, “Accounting for Servicing of Financial Assets” (SFAS 156), to simplify accounting for separately recognized servicing assets and servicing liabilities. SFAS 156 amends SFAS 140. Additionally, SFAS 156 applies to all separately recognized servicing assets and liabilities acquired or issued after the beginning of an entity’s fiscal year that begins after September 15, 2006, although early adoption is permitted. The adoption of SFAS 156 is not expected to have a material impact on the Company’s results of operations or financial position.
 
In July 2006, the FASB issued FASB Interpretation 48, “Accounting for Uncertainty in Income Taxes” (FIN 48) — an interpretation of FASB No. 109, “Accounting for Income Taxes.” FIN 48 prescribes a comprehensive model for recognizing, measuring, presenting and disclosing in the financial statements tax positions taken or expected to be taken on a tax return, including a decision on whether or not to file in a particular jurisdiction. FIN 48 clarifies the accounting for uncertainty in income taxes recognized in an enterprise’s financial statements in accordance with FASB Statement No. 109, “Accounting for Income Taxes.” The provisions of FIN 48 are to be applied to all tax positions upon initial adoption of this standard. Only tax positions that meet a “more-likely-than-not” recognition threshold at the effective date may be recognized or


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TERAYON COMMUNICATION SYSTEMS, INC.
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

continue to be recognized upon adoption of FIN 48. The cumulative effect of applying the provisions of FIN 48 is reported as an adjustment to the opening balance of retained earnings. FIN 48 is effective for years beginning after December 15, 2006; therefore, the Company will adopt FIN 48 as of January 1, 2007. The Company expects that adoption of this accounting standard will increase the level of disclosure that the Company provides regarding its tax positions. The adoption of FIN 48 is not expected to have a material impact on the Company’s consolidated financial position and results of operations.
 
In September 2006, the FASB issued SFAS No. 157, “Fair Value Measurements” (SFAS 157), which defines fair value, establishes guidelines for measuring fair value and expands disclosures regarding fair value measurements. SFAS 157 does not require any new fair value measurements but rather eliminates inconsistencies in guidance found in various prior accounting pronouncements. SFAS 157 is effective for fiscal years beginning after November 15, 2007. Earlier adoption is permitted, provided the company has not yet issued financial statements, including for interim periods, for that fiscal year. The Company is currently evaluating the impact of SFAS 157, but does not expect the adoption of SFAS 157 to have a material impact on its consolidated financial position, results of operations or cash flows.
 
In September 2006, the Commission released Staff Accounting Bulletin (SAB) No. 108, “Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements” (SAB 108). SAB 108 provides guidance on how the effects of prior-year uncorrected financial statement misstatements should be considered in quantifying a current year misstatement. SAB 108 requires registrants to quantify misstatements using both an income statement (rollover) and balance sheet (iron curtain) approach and evaluate whether either approach results in a misstatement that, when all relevant quantitative and qualitative factors are considered, is material. If prior year errors that had been previously considered immaterial are now considered material based on either approach, no restatement is required as long as management properly applied its previous approach and all relevant facts and circumstances were considered. If prior years are not restated, the cumulative effect adjustment is recorded in opening retained earnings as of the beginning of the fiscal year of adoption. SAB 108 is effective for fiscal years ending on or after November 15, 2006. The adoption of SAB 108 did not have a material impact on the Company’s financial statements.
 
In February 2007, the FASB issued SFAS No. 159, “The Fair Value Option for Financial Assets and Liabilities” (SFAS 159), which includes an amendment to FASB Statement No. 115, “Accounting for Certain Investments in Debt and Equity Securities.” SFAS 159 provides companies with an irrevocable option to report selected financial assets and liabilities at fair value with changes in fair value reported in earnings. SFAS 159 is effective for fiscal years beginning after November 15, 2007. The Company is currently evaluating the impact of SFAS 159, but does not expect adoption to have a material impact on its consolidated financial position, results of operations or cash flows.
 
Note 3.   Fair Value of Financial Instruments
 
The amounts reported as cash and cash equivalents approximate fair value due to their short-term maturities. The fair value for the Company’s investments in marketable debt and equity securities is estimated based on quoted market prices.


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TERAYON COMMUNICATION SYSTEMS, INC.
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

 
The following estimated fair value amounts have been determined using available market information. However, considerable judgment is required in interpreting market data to develop the estimates of fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts that the Company could realize in a current market exchange.
 
                                 
          Gross
    Gross
       
    Amortized
    Unrealized
    Unrealized
    Fair
 
December 31, 2006
  Cost     Gains     Losses     Value  
    (In thousands)  
 
Investments maturing in less than 1 year:
                               
Commercial paper
  $     $     $     $  
Government agency obligations
                       
                                 
Subtotal
                       
Investments maturing in 1-2 years:
                               
Fixed income corporate securities
                       
Government agency obligations
    12,000             (49 )     11,951  
                                 
Subtotal
    12,000             (49 )     11,951  
                                 
Total
  $ 12,000     $     $ (49 )   $ 11,951  
                                 
 
                                 
          Gross
    Gross
       
    Amortized
    Unrealized
    Unrealized
    Fair
 
December 31, 2005
  Cost     Gains     Losses     Value  
    (In thousands)  
 
Investments maturing in less than 1 year:
                               
Commercial paper
  $ 7,950     $     $ (3 )   $ 7,947  
Government agency obligations
    47,000             (325 )     46,675  
                                 
Subtotal
    54,950             (328 )     54,622  
Investments maturing in 1-2 years:
                               
Fixed income corporate securities
    3,959             (9 )     3,950  
Government agency obligations
    13,998             (136 )     13,862  
                                 
Subtotal
    17,957             (145 )     17,812  
                                 
Total
  $ 72,907     $     $ (473 )   $ 72,434  
                                 
 
There were no realized gains or losses on short-term investments in either the years ended December 31, 2006 or 2005, respectively.
 
Note 4.   Commitments
 
Leases
 
The Company leases its facilities and certain equipment under operating leases. Effective in August 2006, the Company entered into a sub-sublease agreement to sub-sublease its then current principal executive offices located in Santa Clara, California and consisting of approximately 141,000 square feet of office space. The sub-sublease agreement expires on October 31, 2009 which is the same day as the Company’s agreement to sublease the premises expires. Concurrently, the Company entered into a lease agreement to lease approximately 63,000 square feet of office space through September 2009 at another location in Santa Clara, California to serve as the Company’s new principal executive offices. The facility in Belgium is leased through June 30, 2013 with a right to terminate at the end of each three-year period commencing on July 1, 2004. The


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TERAYON COMMUNICATION SYSTEMS, INC.
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Company had a lease in Israel that expired in February 2007. The Company rents the remainder of its facilities on a month-to-month basis. Rent expense was approximately $2.8 million, $3.2 million and $4.3 million, for the years ended December 31, 2006, 2005 and 2004, respectively. Prior to the expiration of certain leases, the Company subleased a portion of its facilities to third parties and currently subleases its former principal executive offices in Santa Clara, California to a third party. See Note 6, “Restructuring Charges and Asset Write-offs.” The Company’s sublease rental income was approximately $0.7 million, $1.4 million and $1.6 million for the years ended December 31, 2006, 2005 and 2004, respectively.
 
In 2002, the Company entered into an operating lease arrangement to lease a corporate aircraft. This lease arrangement was secured by a $9.0 million letter of credit at December 31, 2002. The letter of credit was reduced to $7.5 million in February 2003. The $7.5 million letter of credit was converted to a cash deposit in 2004. In August 2004, the Company entered into a 28-month aircraft sublease terminating on December 31, 2006, which was amended in December 2006 to terminate on January 14, 2007. The lease commitment for the aircraft is included in the table below. On January 14, 2007, the Company returned the corporate aircraft to the lessor of the aircraft and no additional rental payments were due to the lessor after October 2006. The Company paid lease obligations related to the corporate aircraft of $1.5 million, $1.4 million and $1.4 million for the years ended December 31, 2006, 2005 and 2004, respectively. The Company received payments related to its sublease of the corporate aircraft of $1.2 million, $1.2 million and $0.3 million for the years ended December 31, 2006, 2005 and 2004, respectively.
 
The Company has the following operating lease commitments:
 
         
    Operating
 
    Leases  
 
2007
  $ 3,930  
2008