Sonus Networks, Inc.

A class action lawsuit was commenced on behalf of all persons and entities who purchased or otherwise acquired the securities of Sonus Networks, Inc. ("Sonus" or the "Company") between April 9, 2003 and February 11, 2004, inclusive (the "Class Period"), seeking to pursue remedies under the Securities Exchange Act of 1934 (the "Exchange Act"). The complaint names Sonus, Hassan Ahmed and Stephen J. Nill as Defendants. The complaint alleges that throughout the Class Period, Defendants issued numerous statements to the market concerning the Company's financial results, which failed to disclose and/or misrepresented the following adverse facts, among others: (a) that Defendants had improperly and untimely recognized revenue on certain of the Company's customer transactions; (b) that Defendants violated Generally Accepted Accounting Principles and the Company's own internal policies regarding the timing of revenue recognition; and (c) as a result of the foregoing, the Company's revenues, net income and earnings per share published during the Class Period were materially false and misleading.

Click here to view the complaint.

Click here to view the press release.

Click here to join this class action.

Click here to download Adobe Acrobat Reader free of charge.

To find out more about this case, please contact us at shareholderrelations@spornlaw.com or 212-964-0046.

Recent Settlements

· In re Nicor, Inc. Securities Litigation, 02-CV-5168 (N.D. Ill.)
July 9, 2004 - $39 million cash settlement
(Sole Lead Counsel)

· In re Westar Energy, Inc. Securities Litigation, 03-CV-4003 (D. Kansas)
September 1, 2005 - $30 million cash settlement
(Sole Lead Counsel)

· In re PNC Finacial Services Group, Inc. Securities Litigation, 02-CV-271(W.D. Penn.)
April 12, 2007 - $46.675 million recovery
(Co-lead Counsel)

· In re SPX Corp. Securities Litigation, 3:04-CV-99 (W.D.N.C.)
April 13, 2007 - $10 million cash settlement
(Sole Lead Counsel)

Client Resources

· Map Management, LLC
MAP Management, LLC is a Registered Investment Advisor providing services to Individuals, multi-employer Taft-Hartley plans, Corporate Pension plans, Estates, and Foundations. By offering fixed fee arrangements, MAP provides unbiased and independent opinions, as well as helpful recommendations and education. Through a very personal process, MAP will develop a portfolio and a plan for your investments that is individualized to
your needs.

· HGK Asset Management
Since 1983, HGK Asset Management has been making the right decisions for investors in conservative fixed income and value equity portfolios. With about $3 billion currently under its management and more than 80 client relationships, HGK has expanded its original business that specialized in Taft-Hartley benefit and pension funds to include corporate pension, institutional and individual investment accounts.