Sonus Networks to Present at Upcoming Investor Conferences

Sonus Networks, Inc. (Nasdaq: SONS), a market leader in next-generation IP-based network solutions, today announced that it is scheduled to present at the following investment conferences:

• Moe Castonguay, Chief Financial Officer, will present at the Citi 8th Annual US Small/Mid Cap Conference in Las Vegas, NV on Tuesday, November 15, 2011. The presentation will be webcast live beginning at approximately 1:55 p.m. (EST).
• Raymond Dolan, Chief Executive Officer, and Moe Castonguay, Chief Financial Officer, will present at the UBS Global Technology and Services Conference in New York, NY on Thursday, November 17, 2011. The presentation will be webcast live beginning at approximately 10:30 a.m. (EST).
• Raymond Dolan, Chief Executive Officer, and Moe Castonguay, Chief Financial Officer, will present at the Credit Suisse 2011 Technology Conference in Scottsdale, AZ on Thursday, December 1, 2011. The presentation will be webcast live beginning at approximately 10:00 a.m. (EST).

Interested parties can access each webcast live on Sonus Networks website at http://investors.sonusnet.com/events.cfm. The presentations will be available for replay for a minimum of 60 days.

About Sonus Networks

Sonus Networks, Inc. is a leader in IP networking with proven expertise in delivering secure, reliable and scalable next generation infrastructure and subscriber solutions. With customers in over 50 countries across the globe and over a decade of experience in transforming networks to IP, Sonus has enabled service providers and enterprises to capture and retain users and generate significant ROI. Sonus products include media and signaling gateways, policy/routing servers, session border controllers and subscriber feature servers. Sonus products are supported by a global services team with experience in design, deployment and maintenance of some of the world's largest and most complex IP networks. For more information, visit www.sonusnet.com and the Sonus in Session blog.

Important Information Regarding Forward-Looking Statements

This release may contain forward-looking statements (within the meaning of the Private Securities Litigation Reform Act) regarding future events that involve risks and uncertainties. Readers are cautioned that these forward-looking statements are only predictions and may differ materially from actual future events or results. Readers are referred to Item 1A "Risk Factors” of Sonus’ Annual Report on Form 10-K for the year ended December 31, 2010 and all subsequent Quarterly Reports on Form 10-Q, which identify important risk factors that could cause actual results to differ from those contained in the forward-looking statements. Any forward-looking statements represent Sonus’ views only as of today and should not be relied upon as representing Sonus’ views as of any subsequent date. While Sonus may elect to update forward-looking statements at some point, Sonus specifically disclaims any obligation to do so, except as required by law.

Sonus is a registered trademark of Sonus Networks, Inc. All other company and product names may be trademarks of the respective companies with which they are associated.