CoSine Communications Announces Financial Results for the Quarter Ended September 30, 2005


SAN JOSE, Calif., Oct. 31, 2005 (PRIMEZONE) -- CoSine Communications, Inc. (Pink Sheets:COSN), a provider of customer support services for managed, network-based IP and broadband service providers, today announced revenues of $785,000 and a net loss of $31,000, or $0.00 per share for the three months ended September 30, 2005, as compared to revenues of $1,088,000 and a net loss of $14.6 million or $1.47 loss per share for the three months ended September 30, 2004. For the nine months ended September 30, 2005, CoSine reported revenues of $2.4 million and a net loss of $1.5 million or $0.15 loss per share as compared to revenues of $8.l million and a net loss of $31.7 million or $3.17 loss per share in the nine months ended September 30, 2004.

During the quarter, CoSine announced that the board of directors, after an extensive review of strategic alternatives, had approved a plan to redeploy CoSine's existing resources to identify and acquire new business operations, while continuing to provide support to CoSine's existing customers and continuing to offer CoSine's intellectual property for license or sale. CoSine's redeployment strategy will involve the acquisition of one or more operating businesses with existing or prospective taxable earnings. This strategy may allow CoSine to realize future cash flow benefits from its net operating loss carry-forwards ("NOLs"). As of this date, no candidates have been identified, and no assurance can be given that the Company will find suitable candidates, and if it does, that it will be able to utilize its existing NOLs.

Also during the quarter, CoSine announced the adoption of a share purchase rights plan, whose primary purpose is to preserve CoSine's existing and projected net operating losses (NOLs). Cosine's redeployment strategy is based in part on its ability to realize future cash flow benefits from its NOLs. The share purchase rights plan is designed to reduce the likelihood that an ownership change will impair the availability of CoSine's NOLs. CoSine had over $300 million in NOLs at December 31, 2004.

About Cosine Communications

CoSine Communications was founded in 1998 as a global telecommunications equipment supplier to empower service providers to deliver a compelling portfolio of managed, network-based IP and broadband services to consumers and business customers. Currently, CoSine's business consists primarily of a customer service capability operated under contract by a third party.

Safe Harbor Warning

"Safe Harbor" Statement Under the Private Securities Litigation Reform Act of 1995: This release contains forward-looking statements, which include, among others, statements concerning CoSine's expected financial performance, exploration of strategic alternatives, and business outlook, expected performance and developments. The company uses words such as "anticipate," "believe," "plan," "expect," "future," "intend" and similar expressions to identify forward-looking statements. These forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from those reflected in the forward-looking statements.

Factors that might cause such a difference include, but are not limited to, Cosine's ability to identify and effectuate desirable strategic alternatives, the time and costs required to explore and investigate possible transactions and other corporate actions, management and board interest in and distraction due to exploring and investigating strategic alternatives, the reactions, either positive or negative, of investors, competitors, customers, employees and others to CoSine exploring possible strategic alternatives and opportunities and to any specific strategic alternative or opportunity selected by CoSine and the continued downturn in the telecommunications industry and slow development of the market for network-based IP services, all as may be discussed in more detail in the section entitled "Risk Factors" on pages 31 through 36 of our Annual Report on Form 10-K for the fiscal year ended December 31, 2004 and in the Quarterly Reports on Form 10-Q that we file during fiscal year 2005. Readers are cautioned not to place undue reliance on these forward-looking statements, which reflect management's opinions only as of the date hereof. CoSine undertakes no obligation to revise or publicly release the results of any revision to these forward-looking statements.



                     CoSine Communications, Inc.
                 CONSOLIDATED STATEMENT OF OPERATIONS
                (in thousands, except per share data)

                            Three months ended      Nine months ended
                               September 30,          September 30,
                            -------------------    -------------------
                              2005       2004        2005       2004
                            --------   --------    --------   --------
 Revenue:
  Product                   $     --   $    452    $    216   $  5,989
  Service                        785        636       2,165      2,122
                            --------   --------    --------   --------
   Total revenue                 785      1,088       2,381      8,111
 Cost of revenue                 702      4,441       1,545      7,373
                            --------   --------    --------   --------
 Gross profit (loss)              83     (3,353)        836        738

 Operating expenses:
  Research and development        --      3,709         103     13,316
  Sales and marketing             --      3,056         105      9,594
  General and administrative     422      1,721       2,825      4,626
  Restructuring and
   impairment charges             --      2,871         (91)     5,214
                            --------   --------    --------   --------
 Total operating expenses        422     11,357       2,942     32,750
                            --------   --------    --------   --------

 Loss from operations           (339)   (14,710)     (2,106)   (32,012)

 Interest income and
  expense and other, net         191         82         470        304
                            --------   --------    --------   --------
 Loss before income tax
  provision (benefit)           (148)   (14,628)     (1,636)   (31,708)

 Income tax provision
  (benefit)                     (117)        (9)        (94)         2
                            --------   --------    --------   --------
 Net loss                   $    (31)  $(14,619)   $ (1,542)  $(31,710)
                            ========   ========    ========   ========
 Basic and diluted
  net loss per share        $  (0.00)  $  (1.47)   $  (0.15)  $  (3.17)

 Shares used in computing
  basic and diluted net
  loss per share              10,091      9,945      10,095      9,998


                       CoSine Communications, Inc.
                CONDENSED CONSOLIDATED BALANCE SHEETS
                            (in thousands)

                                          September 30,    December 31,
                                              2005            2004(a)
                                            ---------       ---------
                                           (Unaudited)
 ASSETS
 Current assets:
  Cash and cash equivalents                 $  12,113       $   9,203
  Short-term investments                       10,864          15,710
  Accounts receivable, trade                      171           1,328
  Other receivables                               162             483
  Prepaid expenses and                                    
   other current assets                           416             949
                                            ---------       ---------
 Total current assets                          23,726          27,673
 Long-term deposits                               310             150
                                            ---------       ---------
                                            $  24,036       $  27,823
                                            =========       =========
 LIABILITIES AND STOCKHOLDERS' EQUITY                     
 Current liabilities:                                     
  Accounts payable                          $     243       $     252
  Accrued warranty liability                       43             157
  Other accrued liabilities                     1,011           3,129
  Accrued compensation                             --             412
  Deferred revenue                                469             509
                                            ---------       ---------
 Total current liabilities                      1,766           4,459
                                            ---------       ---------
 Total liabilities                              1,766           4,459
                                            =========       =========
                                                          
 Stockholders' equity:                                    
  Common stock                                      1               1
  Additional paid-in capital                  538,947         540,028
  Notes receivable from stockholders               --          (1,520)
  Accumulated other comprehensive income          623             614
  Accumulated deficit                        (517,301)       (515,759)
                                            ---------       ---------
 Total stockholders' equity                    22,270          23,364
                                            =========       =========
                                            $  24,036       $  27,823
                                            =========       =========
                                                     
 (a) Amounts are derived from the December 31, 2004 audited
     financial statements.


            

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