| CARRIER ACCESS CORP      ITEM 1A RISK FACTORS        Investors should carefully consider the risks described below before making     an investment decision | 
    
    
      | The risks described below are not the only risks we     face | 
    
    
      | Additional risks we are not presently aware of or that we currently     believe are immaterial may also impair our business operations | 
    
    
      | Our business     could be harmed by any or all of these risks | 
    
    
      | The trading price of our     common stock could decline significantly due to any of these risks, and     investors may lose all or part of their investment | 
    
    
      | In assessing these     risks,  investors  should also refer to other information contained or     incorporated by reference in this annual report on Form 10-K, including our     consolidated financial statements and related notes | 
    
    
      | We experienced large net operating losses and decreases in net revenue in     2005, 2002 and 2001, which caused a significant decline in the market price     of our common stock, and we could experience similar declines in net revenue     in the future, which could negatively impact the market price of our common     stock | 
    
    
      | Our quarterly and annual operating results have fluctuated significantly in     the past and may continue to vary significantly in the future | 
    
    
      | For example,     although we were profitable on an annual basis for our fiscal years ended     December 31, 1997 through 2000, we incurred significant net losses of dlra14dtta9     million and dlra52dtta7 million in 2001 and 2002, respectively | 
    
    
      | Our quarterly revenues fluctuated in     these periods as well | 
    
    
      | We cannot be certain that our annual and quarterly     net revenues will not continue to fluctuate significantly in the future | 
    
    
      | We face a number of risks that could cause our future net revenues and     operating  results  to  experience similar fluctuations, including the     following:           •   The loss of, or significant reduction in purchases by, any of our     large customers, one of whom was responsible for approximately 42prca of our     net revenues in the year ended December 31, 2005;           •   Overall movement toward industry consolidation among both our     competitors and our customers, both wireless and wireline;           •   Reductions in capital spending for equipment by the telecommunications     industry and reductions in capital spending for wireless equipment due to     mergers and consolidation in the wireless market, a factor that resulted in     a large decline in our product sales in 2001, 2002 and 2005;           •   Fluctuations in demand for our products and services, especially with     respect to Internet businesses and telecommunications carriers, in part due     to the changing global economic and regulatory environment;           •   Changes in sales and implementation cycles for our products and     reduced visibility into our customers’ spending plans and associated     revenue;           •   Price and product competition in the communications and networking     industries, which can change rapidly due to technological innovation;           •   Costs related to acquisitions of technologies or businesses;           •   The timing, size, and mix of orders from customers;           •   The introduction and market acceptance of new technologies and     products and our success in new markets;           •   Variations in sales channels, product costs, or mix of products sold;           •   The ability of our customers, channel partners, and suppliers to     obtain financing or to fund capital expenditures;           •   Our ability to achieve targeted cost reductions and to execute on our     strategy and operating plans; and           •   Potential difficulties in completing projects associated with     in-process research and development | 
    
    
      | The unpredictability of our quarterly results may adversely affect the     trading price of our common stock | 
    
    
      | Our net revenues and operating results may vary significantly from quarter     to quarter due to a number of factors, many of which are outside of our     control and any of which may cause our stock price to fluctuate | 
    
    
      | Generally,     purchases  by  service  providers of telecommunications equipment from     manufacturers have been unpredictable and clustered, rather than steady, as     the providers build out their networks | 
    
    
      | The primary factors that may affect     our net revenues and results include the following:           •   Fluctuation in demand for our voice infrastructure products and the     timing and size of customer orders;           •   The cancellation or deferral of existing customer orders or the     renegotiation of existing contractual commitments;           •   Consolidation and/or reorganization post-merger of certain customers;           •   The failure of certain of our customers to successfully and timely     reorganize their operations, including emerging from bankruptcy or post     bankruptcy reorganization;           •   The length and variability of the sales cycle for our products; and           •   The timing of revenue recognition and amount of deferred revenues | 
    
    
      | 8     ______________________________________________________________________    [33]Table of Contents       Our industry is highly competitive; if we fail to compete successfully     against  our  competitors, our market share and product sales could be     adversely  affected,  resulting  in  a decline in our net revenues and     deterioration of our operating results | 
    
    
      | The market for our products is intensely competitive, with a large number of     equipment  suppliers providing a variety of products to diverse market     segments within the telecommunications industry | 
    
    
      | Our existing and potential     competitors  include  many large domestic and international companies,     including companies that have longer operating histories, greater name     recognition, larger customer bases and substantially greater financial,     manufacturing, technological, sales and marketing, distribution, and other     resources | 
    
    
      | Our principal competitors include Adtran, Inc, Audiocodes, Cisco     Systems, Inc, Eastern Research, Inc, Lucent Technologies, Inc, Natural     Microsystems, RAD, Telco Systems, Inc, Tellabs, Inc, Verilink Corporation,     Zhone Technologies, Inc | 
    
    
      | and other small independent system integrators and     private  and  public companies | 
    
    
      | Most of these companies offer products     competitive  with one or more of our product lines | 
    
    
      | We expect that our     competitors that currently offer products competitive with only one of our     products  will  eventually  offer products competitive with all of our     products | 
    
    
      | Due  to  the  rapidly evolving markets in which we compete,     additional  competitors with significant market presence and financial     resources, including large telecommunications equipment manufacturers and     computer hardware and software companies, may enter these markets through     acquisition, thereby further intensifying competition | 
    
    
      | Many of our current and potential competitors are substantially larger than     we  are and have significantly greater financial, sales and marketing,     technical, manufacturing, and other resources and more established channels     of distribution | 
    
    
      | As a result, such competitors may be able to respond more     rapidly  to  new  or  emerging  technologies  and  changes in customer     requirements, or to devote greater resources than we can devote to the     development,  promotion, and sale of their products | 
    
    
      | In addition, such     competitors may enter our existing or future markets with solutions, either     developed  internally or through acquisition, that may be less costly,     provide higher performance or additional features, or be introduced earlier     than our solutions | 
    
    
      | Successful new product introductions or enhancements by     our competitors could cause a significant decline in sales or loss of market     acceptance of our products | 
    
    
      | Competitive products may also cause continued     intense price competition or render our products or technologies obsolete or     noncompetitive | 
    
    
      | To be competitive, we must continue to invest significant resources in     research and development and sales and marketing | 
    
    
      | We may not have sufficient     resources to make such investments or be able to make the technological     advances necessary to be competitive | 
    
    
      | In addition, our current and potential     competitors have established or may establish cooperative relationships     among themselves or with third parties to increase the ability of their     products to address the needs of our prospective customers | 
    
    
      | Accordingly, it     is possible that new competitors or alliances among competitors may emerge     and rapidly acquire significant market share | 
    
    
      | Increased competition is     likely to result in price reductions, reduced gross profit margins, and loss     of market share, any of which could cause a decline in the price of our     common stock | 
    
    
      | Deterioration  of  the  wireless infrastructure industry could lead to     reductions in capital spending budgets by wireless operators and original     equipment manufacturers, which could adversely affect our net revenues,     gross profit margins and income | 
    
    
      | Our net revenues and gross profit margins will depend significantly on the     overall demand for wireless infrastructure subsystems products | 
    
    
      | A reduction     in capital spending budgets by wireless operators and OEMs caused by an     economic downturn, consolidation within the industry such as the merger of     Cingular  and  AT&T  Wireless, and the merger of Sprint and Nextel, or     otherwise could lead to a softening in demand or delay procurement of our     products and services | 
    
    
      | Such factors resulted in a decrease in revenues and     earnings in the third and fourth quarter of 2004 and during 2005, and could     result in decreases in net revenues and earnings in future periods | 
    
    
      | We continue to rely on a limited number of direct customers, the loss of any     of which could result in a decline in net revenues and the price of our     common stock | 
    
    
      | A significant portion of our net revenues has been derived from a limited     number  of large direct customers, and we believe that this trend will     continue in the future | 
    
    
      | For example, for the year ended December 31, 2005,     we sold directly to Cingular, who accounted for approximately 42prca of our net     revenues | 
    
    
      | The majority of our direct customers do not have any obligation to     purchase additional products, and, accordingly, they may terminate their     purchasing arrangements with us or significantly reduce or delay the amount     of  our  products that they order or forecast without penalty | 
    
    
      | We have     experienced cancellations and delays of orders in the past and significant     reductions in product forecasts, and we expect to continue to experience     order cancellations and delays from time to time in the future | 
    
    
      | Any such     termination, change, reduction or delay in orders would harm our business | 
    
    
      | The timing of customer orders and accuracy of customer forecasts and our     ability  to  fulfill  these  forecasts  and  orders can cause material     fluctuations  in  our  operating  results, and we anticipate that such     fluctuations will continue in the future | 
    
    
      | We rely on a limited number of distributors and OEMs, the loss of any of     which could cause a decline in our net revenue and have an adverse effect on     our results of operations and the price of our common stock | 
    
    
      | A significant portion of the sales of our products are through distributors     and  OEMs,  which  generally are responsible for warehousing products,     fulfilling  product  orders,  servicing  end-users and, in some cases,     customizing and integrating our products at end-users’ sites | 
    
    
      | We rely on a     limited number of distributors and OEMs to sell our products | 
    
    
      | For example,     one distributor, Walker & Associates, Inc, accounted for 8prca, 7prca, and 11prca of     our net revenues in 2005, 2004 and 2003, respectively | 
    
    
      | We expect that, in     the future, a significant portion of our products will continue to be sold     to a small number of distributors and OEMs | 
    
    
      | Accordingly, if we lose any of     our significant distributors and OEMs or experience reduced sales to such     distributors and OEMs, our net revenue would decline, which would have an     adverse effect on our operating results and could cause a decline in the     price of our common stock | 
    
    
      | If our distributors are not successful both in terms of operating their own     businesses  and  in  selling our products to their customers, we could     experience a decline in net revenue, an increase in inventory and bad debt,     and deterioration in our operating results | 
    
    
      | In the past, some of our distributors have experienced problems with their     financial and other resources that have impaired their ability to pay us | 
    
    
      | For example, in 2002 we incurred bad debt of approximately dlra1dtta1 million from     one of our distributors when it declared bankruptcy | 
    
    
      | Although we continually     monitor and adjust our reserves for bad debts, we cannot assure you that any     future bad debts that we incur will not exceed our reserves | 
    
    
      | Furthermore, we     cannot assure you that the financial instability of one or more of our     distributors  will  not  result  in  decreased net revenues for us and     deterioration in our operating results | 
    
    
      | Distributors have, in the past,     reduced planned purchases of our products due to overstocking and such     reductions may occur again in the future | 
    
    
      | Moreover, distributors who have     overstocked our products have, in the past, reduced their inventories of our     products by selling such products at significantly reduced prices | 
    
    
      | Any reduction in planned purchases or sales at     reduced prices by distributors in the future could harm our business by,     among  other things, reducing the demand for our products and creating     conflicts with other distributors and our direct sales efforts | 
    
    
      | Some of our distributors and OEMs have stock rotation, limited return, on     time delivery and price protection rights which could cause a material     decrease in the average selling prices and gross profit margins of our     products, either of which would have an adverse effect on our operating     results and financial condition | 
    
    
      | We generally provide our distributors and OEMs with limited stock rotation     rights of return, on time delivery and price protection rights | 
    
    
      | Three times     a year, pursuant to limited stock rotation rights, some of these customers     can return on average up to 15prca of unsold products to us in return for an     equal dollar amount of new products | 
    
    
      | The returned products must have been     held in stock by such distributor or OEM and have been purchased within the     four-month period prior to the return date | 
    
    
      | We cannot be certain that we     will not experience significant returns of our products, or ensure that our     shipments in the future will be on time, which could result in a material     decrease in our net revenues, average selling prices, gross margins and     operating results | 
    
    
      | 9     ______________________________________________________________________    [34]Table of Contents       We also provide certain distributors and OEMs with price protection rights     in  which  we are required to provide 60-days’ advance notice of price     decreases | 
    
    
      | Orders we receive from distributors or OEMs within the 60-day     period are filled at the existing, lower product price | 
    
    
      | In the event of a     price decrease, we may be required to credit distributors and OEMs the     difference in price for any stock they have in their inventory | 
    
    
      | In addition,     we grant certain of our distributors and OEMs “most favored customer” terms,     pursuant to which we have agreed not to knowingly grant another distributor     or OEM the right to resell the same products on terms more favorable than     those granted to the existing distributor or OEM, without offering the more     favorable terms to the existing distributor or OEM It is possible that     these price protection and “most favored customer” clauses could cause a     material decrease in the average selling prices and gross profit margins of     our  products,  which  could in turn have a material adverse effect on     distributor  or OEM inventories, our business, net revenues, financial     condition, and operating results | 
    
    
      | We do not have exclusive agreements with our distributors, who sell other     broadband communications equipment that competes with our products | 
    
    
      | As a     result, our distributors may not recommend or continue to use and offer our     products or devote sufficient resources to market and support our products,     which could result in a reduction in sales of our products | 
    
    
      | Our agreements with our distributors generally do not grant exclusivity,     prevent the distributor from carrying competing products or require the     distributor  to  purchase  any  minimum dollar amount of our products | 
    
    
      | Additionally, our distribution agreements do not attempt to allocate certain     territories for our products among our distributors | 
    
    
      | To the extent that     different  distributors  target  the  same  end-users of our products,     distributors may come into conflict with one another, which could damage our     relationship with, and sales to, such distributors | 
    
    
      | Most  of our existing distributors also distribute the products of our     competitors | 
    
    
      | Our distributors may not recommend or continue to use and offer     our products, or our distributors may recommend competitive products in     place of our products and not devote sufficient resources to market and     provide the necessary customer support for our products | 
    
    
      | In addition, it is     possible that our distributors will give a higher priority to the marketing     and customer support of competitive products or alternative solutions | 
    
    
      | Our distributors do not have any obligation to purchase additional products,     and accordingly, they may terminate their purchasing arrangements with us,     or significantly reduce or delay the amount of our products that they order,     without penalty | 
    
    
      | Any such termination, change, reduction, or delay in orders     would harm our business | 
    
    
      | If our direct customers do not successfully operate their own businesses,     their capital expenditures could be limited, which could result in a delay     in payment for, or a decline in the purchase of, our products, which could     result in a decrease in our net revenue and a deterioration of our operating     results | 
    
    
      | In the past, some of our direct customers have experienced problems with     their financial and other resources that have impaired or significantly     delayed their ability to pay us | 
    
    
      | For example, in 2005 one of our direct     customers  experienced  difficulty  related to a change in their order     processing system, which delayed payments to us | 
    
    
      | We cannot be certain that     any bad debts that we incur in connection with direct sales will not exceed     our reserves or that the financial instability of one or more of our direct     customers will not continue to adversely affect future sales of our products     or our ability to collect on accounts receivable for current sales of our     products | 
    
    
      | In addition, we sell a moderate volume of products to competitive carriers | 
    
    
      | The competitive carrier market continues to experience consolidation and     related post-consolidation reorganization | 
    
    
      | Many of our competitive carrier     customers do not have a strong financial position and have limited ability     to access the public financial markets for additional funding for growth and     operations | 
    
    
      | For example, one of our large customers must rely on funding     from its parent to fund operating losses and meet its working capital,     capital expenditure, debt service and other obligations | 
    
    
      | Neither equity nor debt financing may be available to these companies on     favorable terms, if at all | 
    
    
      | In addition, if one or more of these competitive     carriers fail, we could face a loss in net revenues and an increased bad     debt expense, due to their inability to pay outstanding invoices, as well as     a corresponding decrease in our customer base and future net revenues | 
    
    
      | Furthermore, a significant portion of our sales to competitive carriers is     made  through  independent  distributors | 
    
    
      | The  failure of one or more     competitive  carriers could cause a distributor to experience business     failure and/or default on payments to us | 
    
    
      | We grant certain of our direct customers “most favored customer” terms,     which could cause a material decrease in the average selling prices and     gross profit margins of our products, which would have an adverse effect on     our operating results and financial condition | 
    
    
      | In agreements with direct customers that contain “most favored customer”     terms, we have agreed to not knowingly provide another direct customer with     similar terms and conditions or a better price than those provided to the     existing  direct  customer  without offering the more favorable terms,     conditions or prices to the existing direct customer | 
    
    
      | It is possible that     these “most favored customer” clauses could cause a material decrease in the     average selling prices and gross profit margins of our products, which     could,  in  turn,  have an adverse effect on our operating results and     financial condition | 
    
    
      | 10     ______________________________________________________________________    [35]Table of Contents       A  longer  than  expected sales cycle could cause our net revenues and     operating results to vary significantly from quarter to quarter | 
    
    
      | Our sales cycle averages approximately four to 24 months but can take longer     in  the case of incumbent local exchange carriers, or ILECs, and other     end-users | 
    
    
      | This process is often subject to delays because of factors over     which we have little or no control, including:           •   a distributor’s, OEM’s or carrier’s budgetary constraints including     the timing of expenditures;           •   consolidation and merger discussions between wireless and wireline     carriers;           •   outsourcing of inventory management by a distributor or OEM customer;           •   changes to or problems with a distributor’s, OEM carrier’s internal     order processing systems;           •   a distributor’s, OEM’s or carrier’s internal acceptance reviews;           •   a distributor’s, OEM’s or carrier’s staffing levels and availability     of lab time for product testing;           •   the success and continued internal support and development of a     carrier’s product offerings;           •   the possibility of cancellation or delay of projects by distributors,     OEMs or carriers; and           •   the possibility of a regulatory investigation of our distributors,     OEMs or carriers | 
    
    
      | In addition, as carriers have matured and grown larger both through internal     growth and acquisitions, their purchase processes have typically become more     institutionalized, requiring more of our time and effort to gain the initial     acceptance and final adoption of our products by these customers | 
    
    
      | Although     we attempt to develop our products with the goal of facilitating the time to     market of our customer’s products, the timing of the commercialization of a     new distributor or carrier applications or services based on our products is     primarily dependent on the success and timing of a customer’s own internal     deployment program | 
    
    
      | Delays in purchases of our products can also be caused     by late deliveries by other vendors, changes in implementation priorities     and slower than anticipated growth in demand for our products | 
    
    
      | A delay in,     or a cancellation of, the sale of our products could cause our results of     operations to vary significantly from quarter to quarter | 
    
    
      | This     process  can  last  from  four to 18 months or longer depending on the     technology, the service provider, and the demand for the product from the     service provider’s subscribers | 
    
    
      | Consequently, we are involved in a constant     process of submitting for approval succeeding generations of products, as     well as products that deploy new technology or respond to new technology     demand from certain carriers or other end-users | 
    
    
      | We have been successful in     the past in obtaining such approvals | 
    
    
      | However, we cannot be certain that we     will obtain such approvals in the future or that sales of such products will     continue to occur | 
    
    
      | Furthermore, the delay in sales until the completion of     the approval process, the length of which is difficult to predict, could     result in fluctuations of our net revenues and uneven operating results from     quarter to quarter or year to year | 
    
    
      | Communications carriers face capital constraints which have restricted and     may  continue  to  restrict their ability to buy our products, thereby     resulting in longer sales cycles, deferral or delay of purchase commitments     for our products, and increased price competition | 
    
    
      | Our  customers consist primarily of communications carriers, including     wireless carriers, local exchange carriers, multi-service cable operators,     and competitive local and international communications providers | 
    
    
      | These     carriers require substantial capital for the development, construction, and     expansion of their networks and the introduction of their services | 
    
    
      | Although     the  economy  has  slightly  improved, there is still an oversupply of     communications  bandwidth  that  has  resulted  in a constraint on the     availability of capital for these carriers and has had a material adverse     effect  on many of our customers, who have substantially reduced their     capital spending | 
    
    
      | If our current or potential customers cannot successfully     raise necessary funds or if they experience any other adverse effects with     respect to their operating results or profitability, their capital spending     programs could continue to be adversely impacted | 
    
    
      | These conditions adversely     impacted our sales and operating results throughout 2005, 2004, and 2003 | 
    
    
      | These conditions may continue to result in longer sales cycles, deferral or     delay  of  purchase  commitments for our products, and increased price     competition | 
    
    
      | In addition, to the extent we choose to extend trade credit to     these prospective customers, we will be subject to additional financial risk     that could increase our expenses | 
    
    
      | If we are unable to develop new or enhanced products that achieve market     acceptance, we could experience a reduction in our future product sales,     which would cause the market price of our common stock to decline | 
    
    
      | The communications industry is characterized by rapidly changing technology,     evolving industry standards, changes in end-user requirements, and frequent     new product introductions and enhancements, each of which may render our     existing products obsolete or unmarketable | 
    
    
      | Our success depends on our     ability to enhance our existing products and to timely and cost-effectively     develop new products with features that meet changing end-user requirements     and emerging industry standards | 
    
    
      | The development of new,                                           11     ______________________________________________________________________    [36]Table of Contents       technologically advanced products is an expensive, complex and uncertain     process  requiring  high levels of innovation, as well as the accurate     anticipation of technological and market trends | 
    
    
      | We may not be successful in     identifying, developing, manufacturing, and marketing product enhancements     or  new products that will respond to technological change or evolving     industry standards | 
    
    
      | In the recent past, we have experienced delays in the     development  and  shipment of new products and enhancements, which has     resulted in distributor and end-user frustration and delay or loss of net     revenue | 
    
    
      | It  is  possible  that  we  will experience similar or other     difficulties  in the future that could delay or prevent the successful     development, production, or shipment of such new products or enhancements,     or that our new products and enhancements will not adequately meet the     requirements of the marketplace and achieve market acceptance | 
    
    
      | Announcements     of currently planned or other new product offerings by our competitors or us     have  in the past caused, and may in the future cause, distributors or     end-users to defer or cancel the purchase of our existing products | 
    
    
      | Our     inability to develop new products or enhancements to existing products on a     timely basis, or the failure of such new products or enhancements to achieve     market acceptance, could result in a decline in our future product sales and     the price of our common stock | 
    
    
      | The introduction of new or enhanced products could cause disruptions in our     distribution channels and the management of our operations, which could     cause us to record lower net revenues or adversely affect our gross profit     margins | 
    
    
      | Our introduction of new or enhanced products will require us to manage the     transition from older products in order to minimize disruption in customer     ordering patterns, avoid excessive levels of older product inventories, and     ensure that adequate supplies of new products can be delivered to meet     customer demand | 
    
    
      | We have historically reworked certain of our products in     order to add new features that were included in subsequent releases of the     products, which generally resulted in reduced gross profit margins for those     products  until  such time as production volumes of these new products     increase | 
    
    
      | We can give no assurance that these historical practices will not     occur in the future and cause us to record lower net revenue or negatively     affect our gross profit margins | 
    
    
      | We  rely on the introduction of new or enhanced products to offset the     declining sales prices and gross profit margins of our older products, and     the failure of our new or enhanced products to achieve market acceptance     could result in a decline in our net revenues and operating results | 
    
    
      | We believe that average selling prices and gross profit margins for our     products  will  decline  as  such  products  mature and as competition     intensifies | 
    
    
      | For example, the average selling price for our Wide Bank     products and Adit products has decreased substantially in the past two     years | 
    
    
      | These decreases were due to general economic conditions and the     introduction of competitive products with lower prices | 
    
    
      | To offset declining     selling  prices, we believe that, in addition to reducing the costs of     production of our existing products, we must introduce and sell new and     enhanced products on a timely basis at a low cost or incorporate features in     these products that enable them to be sold at higher average selling prices | 
    
    
      | To the extent that we are unable to reduce costs sufficiently to offset any     declining average selling prices or that we are unable to introduce enhanced     products with higher selling prices, our gross profit margins will decline     and such decline could adversely affect our operating results and the price     of our common stock | 
    
    
      | To develop new products or enhancements to our existing products, we will     need  to  continue  to invest in research and development, which could     adversely affect our financial condition and operating results, especially     if we need to increase the amount of our investment to successfully respond     to developing industry standards | 
    
    
      | As standards and technologies evolve, we will be required to modify our     products or develop and support new versions of our products | 
    
    
      | Our research     and development expenses have increased to 22prca of net revenues for the year     ended December 31, 2005, from 19prca and 18prca in the years ended December 31,     2004 and 2003, respectively | 
    
    
      | We plan to continue to invest significant     resources  in research and development | 
    
    
      | As a result, we may experience     periods of limited profitability due to the resources needed to develop new     and enhanced products to remain competitive | 
    
    
      | The failure of our products to     comply, or delays in achieving compliance, with the various existing and     evolving technological changes and industry standards could harm sales of     our current products or delay introduction of our future products | 
    
    
      | 12     ______________________________________________________________________    [37]Table of Contents       Our  customers  are  subject  to  heavy  government  regulation in the     telecommunications industry, and regulatory changes could adversely affect     our customers’ capital expenditure budgets and result in reduced sales of     our products and significant fluctuations in the price of our common stock | 
    
    
      | Competitive local exchange carriers, or CLECs, are allowed to compete with     ILECs, in the provisioning of local exchange services primarily as a result     of the adoption of regulations under the Telecommunications Act of 1996,     (“1996 Act”) that imposed new duties on ILECs to open their local telephone     markets to competition | 
    
    
      | Although the FCC and federal district courts in     various rulings in 2004 rejected efforts of several state regulators to     subject certain VoIP services to intrastate telecommunications regulation,     there are still uncertainties regarding other regulatory, economic, and     political  factors,  particularly  as  VoIP service providers increase     competitive pressures on the traditional carriers | 
    
    
      | Any changes to the 1996     Act or the regulations adopted thereunder, the adoption or repeal of new     regulations by federal or state regulatory authorities apart from or under     the 1996 Act, including the E911 FCC mandate or any legal challenges to the     1996  Act could have a material adverse impact upon the market for our     products | 
    
    
      | We are aware of certain litigation challenging the validity of the 1996 Act     and local telephone competition rules adopted by the FCC for the purpose of     implementing the 1996 Act | 
    
    
      | Furthermore, Congress has indicated that it may     hold hearings to gauge the competitive impact of the 1996 Act, and it is     possible that Congress will propose changes to the 1996 Act | 
    
    
      | This litigation     and potential regulatory change may delay further implementation of the 1996     Act, which could negatively impact demand for our products | 
    
    
      | Our distributors     or carrier customers may require that we modify our products to address     actual or anticipated changes in the regulatory environment, or we may     voluntarily decide to make such modifications | 
    
    
      | In addition, the increasing     demand for wireless communications has exerted pressure on regulatory bodies     worldwide to adopt new standards for such products, generally following     extensive investigation and deliberation over competing technologies | 
    
    
      | In the     past, the delays inherent in this governmental approval process have caused,     and  may  in the future cause, the cancellation or postponement of the     deployment of new technologies | 
    
    
      | These delays could have a material adverse     effect on our net revenues, gross profit margins and operating results | 
    
    
      | Our inability to modify our products in a timely manner or address such     regulatory changes could cause a reduction in demand for our products, a     loss of existing customers or the failure to attract new customers, which     would result in lower than expected net revenues and a decline in the price     of our common stock | 
    
    
      | Telecommunication industry carriers are currently experiencing a period of     consolidation that may impact the timing of future capital expenditures,     which could adversely affect the demand for our products | 
    
    
      | We are experiencing rapid consolidation in our customer base | 
    
    
      | During the     past two years a number of large mergers in the telecommunications industry     have been completed or announced, including the following: Cingular Wireless     and AT&T wireless, Sprint and Nextel, SBC and AT&T, Alltel and Western     Wireless, and Verizon | 
    
    
      | The integration of the operations of the entities     involved in these acquisitions may take a long time, and this could cause     delays in new capital expenditures until the merged entities budget for     additions for their asset base | 
    
    
      | The effects of a consolidation involving any     of our customers could result in postponed orders, decreased orders, or     canceled orders | 
    
    
      | For instance, in the third and fourth quarters of 2004,     market consolidation in the wireless industry relating to the merger of     Cingular and AT&T Wireless and T-Mobile’s purchase of spectrum from Cingular     resulted in reduced sales to our wireless customers and OEMs | 
    
    
      | In addition,     industry consolidation may result in sole-source vendors by our customers,     which  in  turn  could have a material adverse effect on our business,     operating results, and financial condition | 
    
    
      | In particular, consolidation in     the telecommunication industry carriers will lead to fewer customers in that     market and the loss of a major customer could have a material impact on     results not anticipated in a customer marketplace composed of a larger     number of participants | 
    
    
      | 13     ______________________________________________________________________    [38]Table of Contents       We have limited supply sources for some key parts and components of our     products,  and our operations could be harmed by supply interruptions,     component defects or unavailability of these parts and components | 
    
    
      | Many of our key parts and components are purchased from suppliers for which     alternative sources of supply are not currently available | 
    
    
      | Lead times for     materials and components vary significantly and depend on many factors, some     of which are beyond our control, such as specific supplier performance,     contract terms and general market demand for components | 
    
    
      | If product orders     vary significantly from forecasts, we may not have enough inventories of     certain materials and components to fill orders | 
    
    
      | In addition, many companies     utilize the same materials and supplies as we do in the production of their     products | 
    
    
      | Companies with more resources than our own may have a competitive     advantage in obtaining materials and supplies due to greater buying power | 
    
    
      | These  factors  can result in reduced supply, higher prices of certain     materials, and delays in the receipt of certain of our key components, which     in turn may result in increased costs, delays in product delivery, lower net     revenues and lower profit margins | 
    
    
      | We attempt to manage these risks through     development of alternative supply sources, through engineering efforts     designed to remove the necessity for certain components, and by building     long-term relationships and maintaining close personal contact with each of     our  suppliers | 
    
    
      | However, we have experienced delays in or failures of     deliveries of key components in the past, either to us or to our contract     manufacturers, and delays in product deliveries have occurred and may occur     in the future | 
    
    
      | We currently do not have long-term supply contracts for many of our key     components | 
    
    
      | Our suppliers may enter into exclusive arrangements with our     competitors, be acquired by our competitors, stop selling their products or     components to us at commercially reasonable prices, refuse to sell their     products or components to us at any price, or be unable to obtain or have     difficulty obtaining components for their products from their suppliers | 
    
    
      | Our  distributors,  OEMs and direct customers frequently require rapid     delivery  after  placing  an order | 
    
    
      | Our inability to obtain sufficient     quantities of the components needed to fulfill such orders has in the past     resulted  in, and may in the future result in, delays or reductions in     product shipments, which could have an adverse effect on our net revenues     and customer relationships, our business, financial condition, or results of     operations | 
    
    
      | In the event of a reduction or interruption of supply, it could     take up to nine months or more for us to begin receiving adequate supplies     from  alternative suppliers | 
    
    
      | Furthermore, we may not be able to engage     alternative suppliers to satisfy our production requirements on a timely     basis, if at all | 
    
    
      | Delays in shipments by one of our suppliers have led to     lost or delayed net revenues and sales opportunities in the past and may do     so again in the future | 
    
    
      | For example, in the third quarter of 2004, we were     not able to fulfill all of our open purchase orders of our Adit and BROADway     products due to unforecasted demand and an inability to obtain the necessary     parts on a timely basis | 
    
    
      | In addition, the manufacturing process for certain single or sole source     components  is  extremely complex | 
    
    
      | Our reliance on suppliers for these     components,  especially  for  newly designed components, exposes us to     potential production difficulties and quality variations that the suppliers     experience | 
    
    
      | In the past, this reliance on outside suppliers for these     components has negatively impacted cost, the timely delivery of our products     to our customers and consequently our net revenues and operating results | 
    
    
      | Our dependence on third-party manufacturers could result in product delivery     delays, which would adversely affect our ability to successfully sell and     market our products and could result in declines in our net revenues and     operating results | 
    
    
      | We  currently use several third-party manufacturers to provide certain     components, printed circuit boards, chassis, and subassemblies | 
    
    
      | Our reliance     on third-party manufacturers involves a number of risks, including the     potential for inadequate capacity, the unavailability of, or interruptions     in, access to certain process technologies, transportation interruptions,     and reduced control over procurement of critical components, product quality     delivery  schedules,  manufacturing  yields,  and  costs | 
    
    
      | Some of our     manufacturers  are undercapitalized and may be unable in the future to     continue to provide manufacturing services to us | 
    
    
      | If these manufacturers are     unable to manufacture our components in required volumes, we will have to     identify and qualify acceptable additional or alternative manufacturers,     which could take in excess of twelve months | 
    
    
      | We cannot assure you that any     such source would become available to us or that any such source would be in     a position to satisfy our production requirements on a timely basis | 
    
    
      | Any     significant interruption in our supply of these components would result in     delays, the payment of damages for such delays, or reallocation of products     to customers, all of which could have a material adverse effect on our     ability to successfully sell and market our products and could result in     declines  in our net revenues and operating results | 
    
    
      | Moreover, since a     significant portion of our final assembly and test operations are performed     in one location, any fire or other disaster at our assembly facility could     also have an adverse effect on our net revenues and operating results | 
    
    
      | 14     ______________________________________________________________________    [39]Table of Contents       If  we  fail  to maintain an effective system of internal control over     financial reporting, we may not be able to accurately report our financial     results | 
    
    
      | As a result, our business could be harmed and current and potential     stockholders could lose confidence in our financial reporting, which could     negatively impact the trading price of our stock | 
    
    
      | Maintaining an effective system of internal control over financial reporting     is necessary for us to provide reliable financial reports | 
    
    
      | If we cannot     provide reliable financial reports, our business and operating results could     be harmed | 
    
    
      | We have in the past discovered, and may in the future discover,     areas  of  our  internal  control  over  financial reporting that need     improvement, including control deficiencies that may constitute material     weaknesses | 
    
    
      | As more fully described in Item 9A of this Annual Report on     Form 10-K, as of December 31, 2004, our management concluded that we did not     maintain  effective controls over certain aspects of our review of our     statements of cash flows and certain revenue recognition policies | 
    
    
      | These     control deficiencies resulted in a restatement of our previously issued     financial statements for the fiscal years ended December 31, 2003 and 2004 | 
    
    
      | A  failure  to  implement and maintain effective internal control over     financial reporting, including a failure to implement corrective actions to     address a control deficiency, could result in a material misstatement of our     financial statements or otherwise cause us to fail to meet our financial     reporting obligations | 
    
    
      | This, in turn, could result in a loss of investor     confidence in the accuracy and completeness of our financial reports, which     could have an adverse effect on our stock price | 
    
    
      | Our  executive  officers and certain key personnel are critical to our     business, and any failure to retain these employees could adversely affect     our  ability  to  manage  our  operations  and develop new products or     enhancements to current products | 
    
    
      | Our success depends to a significant degree upon the continued contributions     of our Chief Executive Officer and key management, sales, engineering,     finance, customer support, and product development personnel, many of whom     would be difficult to replace | 
    
    
      | In particular, the loss of Roger L Koenig,     President and Chief Executive Officer and our co-founder, could adversely     affect our ability to manage our operations | 
    
    
      | We believe that our future     success will depend in large part upon our ability to attract and retain     highly skilled managerial, sales, finance, customer support and product     development personnel | 
    
    
      | We do not have employment contracts with any of our     key personnel | 
    
    
      | The loss of the services of any such persons, the inability     to attract or retain qualified personnel in the future, or delays in hiring     required personnel, particularly engineering personnel and qualified sales     personnel, could adversely affect our ability to manage our operations and     develop new products or enhancements to current products | 
    
    
      | Our  customers  are  subject  to  numerous  and  changing regulations,     interoperability requirements and industry standards | 
    
    
      | If the products they     purchase from us do not meet these regulations or are not compatible with     these standards or interoperate with the equipment solution selected by our     customers, our ability to continue to sell our products could be seriously     harmed | 
    
    
      | Our  products  must comply with a significant number of voice and data     regulations  and  standards, which vary between US and international     markets, and may also vary within specific foreign markets | 
    
    
      | We also need to     ensure   that   our   products  are  easily  integrated  with  various     telecommunications systems | 
    
    
      | Standards for new services continue to evolve,     requiring us to continuously modify our products or develop new versions to     meet  new standards | 
    
    
      | Testing to ensure compliance and interoperability     requires  significant investments of time and money | 
    
    
      | Our VoIP products     currently interoperate with approximately eleven different product solutions     and  we  are  required to continually update our products based on our     partners’ new releases of software for these products | 
    
    
      | If our systems fail     to timely comply with evolving standards in US and international markets,     if we fail to obtain compliance on new features or if we fail to maintain     interoperability with equipment from other companies, our ability to sell     our products would be significantly impaired | 
    
    
      | We could thereby experience,     among other things, customer contract penalties, delayed or lost customer     orders, decreased net revenues and operating results | 
    
    
      | We  have  maintained compliance with ISO 9001:2000 since we were first     certified in May 2000, with Telcordia OSMINE when we were first certified in     the fourth quarter of 2001, and with Network Equipment Building Standards     Level 3 since we were first certified in April 1998 | 
    
    
      | ISO 9001:2000 is a set     of comprehensive standards that provide quality assurance requirements and     quality management guidance | 
    
    
      | These standards act as a model for quality     assurance for companies involved with the design, testing, manufacture,     delivery and service of products | 
    
    
      | Telecordia, formerly known as Bellcore,     developed the Osmine program, which is a process designed to ensure that all     of the network equipment used by Regional Bell Operating Companies, or     RBOCs,  can be managed by the same software programs | 
    
    
      | NEBS, or Network     Equipment Building Standards, are a set of performance, quality and safety     requirements — which were developed internally at Bell Labs and later at     Telcordia — for network switches | 
    
    
      | RBOCs and local exchange carriers rely on     NEBS-compliant hardware for their central office telephone switching | 
    
    
      | We     cannot assure that we will maintain these certifications | 
    
    
      | The failure to     maintain   any  of  these  certifications  may  adversely  impair  the     competitiveness of our products | 
    
    
      | 15     ______________________________________________________________________    [40]Table of Contents       Our  products may suffer from defects or errors that may subject us to     product returns and product liability claims, which could adversely affect     our reputation and seriously harm our results of operations | 
    
    
      | Our products have contained in the past, and may contain in the future,     undetected or unresolved errors when first introduced or when new versions     are released | 
    
    
      | Despite our extensive testing, errors, defects, or failures     are possible in our current or future products or enhancements | 
    
    
      | If such     defects occur, we may be subject to:           •   delays in or losses of market acceptance and sales;           •   penalties for network outages in our installed network base;           •   product returns;           •   diversion of development resources resulting in new product     development delay;           •   injury to our reputation; or           •   increased service and warranty costs | 
    
    
      | Delays  in  meeting  deadlines for announced product introductions, or     enhancements or performance problems with such products, could undermine     customer  confidence  in  our  products, which would harm our customer     relationships | 
    
    
      | Our agreements with our distributors, OEMs and direct customers typically     contain provisions designed to limit our exposure to potential product     liability claims | 
    
    
      | However, it is possible that the limitation of liability     provisions contained in our agreements may not be effective or adequate     under the laws of certain jurisdictions | 
    
    
      | It is also possible that our errors     and omissions insurance may be inadequate to cover any potential product     liability claim | 
    
    
      | Although we have not experienced any product liability     claims to date, the sale and support of our products entails the risk of     such claims, and it is possible that we will be subject to such claims in     the future | 
    
    
      | Product liability claims brought against us could harm our     business | 
    
    
      | Difficulties in integrating past or future acquisitions could adversely     affect our operating results and result in a decline in the price of our     common stock | 
    
    
      | We have spent and may continue to spend significant resources identifying     businesses to be acquired by us | 
    
    
      | The efficient and effective integration of     any businesses we acquire into our organization is critical to our growth | 
    
    
      | Acquisitions involve numerous risks including difficulties in integrating     the operations, technologies and products of the acquired companies, the     diversion of our management’s attention from other business concerns and the     potential  loss of key employees of the acquired companies | 
    
    
      | Failure to     achieve the anticipated benefits of these and any future acquisitions or to     successfully integrate the operations of the companies we acquire could also     harm our business, results of operations and cash flows | 
    
    
      | Additionally, we     cannot assure you that we will not incur material charges in future quarters     to reflect additional costs associated with our future acquisitions | 
    
    
      | If we have insufficient proprietary rights or if we fail to protect those     rights we have, third parties could develop and market products that are     equivalent to our own, which would harm our sales efforts and could result     in a decrease in our net revenues and the price of our common stock | 
    
    
      | We rely primarily on a combination of patent, copyright, trademark, and     trade secret laws, as well as confidentiality procedures and contractual     restrictions,  to  establish and protect our proprietary rights | 
    
    
      | As of     December 31, 2005, we held a total of sixteen issued US patents and had     approximately eight pending US patent applications | 
    
    
      | We have one US     trademark application pending and have fifteen registered trademarks | 
    
    
      | We     cannot assure you that our pending patent or trademark applications will be     granted or, if granted, will be sufficient to protect our rights | 
    
    
      | We have     entered into confidentiality agreements with our employees and consultants,     and non-disclosure agreements with our suppliers, partners, customers, and     distributors in order to limit access to and disclosure of our proprietary     information | 
    
    
      | However, such measures may not be adequate to deter and prevent     misappropriation of our technologies or independent third-party development     of similar technologies | 
    
    
      | Despite our efforts to protect our proprietary     rights, unauthorized parties may attempt to copy our products or obtain and     use  trade secrets or other information that we regard as proprietary | 
    
    
      | Furthermore,  we  may  be subject to additional risks as we enter into     transactions in foreign countries where intellectual property laws do not     protect our proprietary rights as fully as the laws of the US Based on the     effort and cost associated with enforcing foreign intellectual property     protections as compared with the comparative value of such protections, we     suspended our activities related to obtaining international trademark and     patent registrations in the first quarter of 2003 | 
    
    
      | We cannot assure that our     competitors will not independently develop similar or superior technologies     or duplicate any technology that we have | 
    
    
      | Any such events could harm our     ability to sell and market our products, which could result in a decrease in     net revenue and the price of our common stock | 
    
    
      | 16     ______________________________________________________________________    [41]Table of Contents       We may face intellectual property infringement claims that could result in     significant  expense  to  us,  divert the efforts of our technical and     management personnel, or cause product shipment delays | 
    
    
      | The telecommunications industry is characterized by the existence of a large     number of patents and frequent litigation based on allegations of patent     infringement | 
    
    
      | As the number of entrants in our markets increases and the     functionality of our products is enhanced and overlaps with the products of     other  companies,  we  may become subject to claims of infringement or     misappropriation of the intellectual property rights of others | 
    
    
      | From time to     time, third parties may assert patent, copyright, trademark, and other     intellectual property rights to technologies that are important to us | 
    
    
      | Any     future  third-party  claims, whether or not such claims are determined     adversely to us, could result in significant expense, divert the efforts of     our technical and management personnel, or cause product shipment delays | 
    
    
      | In     the event of an adverse ruling in any litigation, we might be required to     discontinue the use and sale of infringing products, expend significant     resources to develop non-infringing technology, or obtain licenses from     third parties | 
    
    
      | In addition, any public announcements related to litigation     or interference proceedings initiated or threatened against us, even if such     claims are without merit, could cause our stock price to decline | 
    
    
      | In our customer agreements, we agree to indemnify our customers for any     expenses or liabilities resulting from claimed infringements of our product     patents, trademarks, or copyrights of third parties | 
    
    
      | In certain limited     instances,  the amount of such indemnities may be greater than the net     revenues we may have received from our customers | 
    
    
      | Increased sales volume in international markets could result in increased     costs or loss of revenue due to factors inherent in these markets | 
    
    
      | We  are in the process of expanding into international markets, and we     anticipate increased sales from these markets | 
    
    
      | A number of factors inherent     to  these markets expose us to significantly more risk than US based     business, including:           •   local economic and market conditions;           •   exposure to unknown customs and practices;           •   legal regulations and requirements in foreign countries;           •   potential political unrest;           •   foreign currency exchange exposure;           •   unexpected changes in or impositions of legislative or regulatory     requirements;           •   less regulation of patents or other safeguards of intellectual     property; and           •   difficulties in collecting receivables and inability to rely on local     government aid to enforce standard business practices | 
    
    
      | A  small number of shareholders can exert significant influence on the     outcome of matters requiring the approval of a majority of the outstanding     shares of our common stock | 
    
    
      | As of March 1, 2006, our directors and executive officers, together with     members of their families and entities that may be deemed affiliates of, or     related to, such persons or entities, beneficially owned approximately 36prca     of our outstanding shares of common stock | 
    
    
      | Koenig, a     director and our President and Chief Executive Officer, and Ms | 
    
    
      | Pierce, a     director and our former Secretary, former CFO and Corporate Development     Officer,  are  married | 
    
    
      | As of March 1, 2006, Mr | 
    
    
      | Koenig and Ms | 
    
    
      | Pierce     together beneficially owned approximately 36prca of our outstanding shares of     common stock | 
    
    
      | Accordingly, these two stockholders can exert significant     influence over the election of members of our Board of Directors and the     outcome  of  all corporate actions requiring stockholder approval of a     majority of the voting power held by our stockholders, such as mergers and     acquisitions | 
    
    
      | This level of ownership by such persons and entities may     delay, defer, or prevent a change in control and may harm the voting and     other rights of other holders of our common stock |