Sonus Networks Showcases the Future of Next-Generation Communications at its Connexions 2010

Company Brings its Community Together to Assess the Technologies and Best Practices That are Shaping the Communications Industry

WESTFORD, Mass., September 20, 2010 – Sonus Networks, Inc. (Nasdaq: SONS), a market leader in next-generation IP-based network solutions , will host a community of customers, prospective customers and partners at the company's Connexions 2010 event taking place October 12-14, 2010, at the Innisbrook Resort and Golf Club in Palm Harbor, Florida. Attendees will participate in a program featuring expert keynotes and analyst roundtables, in-depth case studies highlighting industry best practices and demonstrations, and interactive panels that showcase the new technologies shaping the next generation of communications.

The Connexions 2010 agenda offers invited participants from Tier 1 and 2 service providers, cable operators, mobile operators and Fortune 500 enterprises intensive sessions that provide multiple perspectives on the evolution of the communications industry. They will learn from Sonus team members, industry experts and their own peers how best to take advantage of critical innovations and trends.

"Connexions 2010 gives our customers and partners a forum in which they can learn from Sonus's technical experts and leading industry authorities how to prepare for and benefit from changes in the communications market," explained Guru Pai, chief operating officer at Sonus Networks. "The best way to address issues and trends is through personal exchanges and face-to-face discussions. Attendees at this year's event will hear expert views and come away with a solid understanding of the business imperatives driving communications trends."

The opening keynote for the conference is Robert Tucker, an innovation expert, business futurist, and author of "Driving Growth through Innovation." Mr. Tucker will deliver the opening keynote address: Driving Growth through Innovation: How Leading Firms are Transforming Their Futures. This will be followed by a special roundtable in which industry analysts from Gartner, Inc., Heavy Reading, Current Analysis, and Infonetics Research will discuss Transformational Trends in Business - VoIP, Session Border Control, IMS and 4G/Service Continuity.

The second day features a keynote by Dean Bubley, founder of Disruptive Analysis, a technology-focused business advisory firm for the mobile, wireless and telecom market. His presentation will address "Net Neutrality and the Network Provider: Happy, Dumb, or Smart Pipes?" Attendees can also participate in 10 thought-provoking panels moderated by industry analysts, service providers, and subject-matter experts. These panels will address topical issues for the entire industry, including SIP, VoIP and the future shape of communications. A Technology Zone, showcasing the latest innovation from Sonus and its partners, will give attendees hands-on experience with groundbreaking new approaches, and enable them to watch product demonstrations and choose interactive panels that are focused on new technologies. Attendees will also have the opportunity to network with Sonus's senior executives and technical experts as well as industry peers, partners, and analysts.

Registration for Connexions 2010 is currently open to Sonus Networks customers, prospective customers and partners at http://www.connexions2010.com/Register.aspx.

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.sonus.net.

This release may contain forward-looking statements 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, 2009 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.

For more information, please contact:

Sonus:
Aline Kaplan
alkaplan@sonusnetworks.com
+1 978-614-8167

Paul Roberts
sonus@daviesmurphy.com
+1 781-418-2418