Sonus Announces Participation in B. Riley & Co. 17th Annual Investor Conference

For Immediate Release: May 23, 2016

WESTFORD, Mass. – Sonus Networks, Inc. (Nasdaq: SONS), a global leader in secure and intelligent Cloud communications, today announced that Mark Greenquist, Sonus Chief Financial Officer, will make a presentation on behalf of the Company at the B. Riley & Co. 17th Annual Investor Conference in Hollywood, CA on Wednesday, May 25, 2016 at 1:30 PM PT.

The presentation will be webcast live on the Sonus Networks Investor website at http://investors.sonusnet.com/events.cfm where a replay of the presentation will also be available for 60 days following the presentation date.

Tags:

Sonus Networks, Sonus, SONS, session border controller, SBC, diameter signaling controller, SDN, Cloud, VoIP communications, unified communications, UC, SIP, B. Riley.

About Sonus:

Sonus brings the next generation of Cloud-based SIP and 4G/VoLTE solutions to its customers by enabling and securing mission critical traffic for VoIP, video, IM and online collaboration. With Sonus, enterprises can intelligently secure and prioritize real-time communications, while service providers can deliver reliable, secure real-time services for mobile, UC and social applications. Sonus offers an award-winning portfolio of hardware-based and virtualized Session Border Controllers (SBCs), Diameter Signaling Controllers (DSCs), Cloud Exchange Networking Platform, Policy/Routing servers and media/signaling gateways. Visit www.sonus.net or call 1-855-GO-SONUS. Follow Sonus on Twitter, Facebook, LinkedIn, YouTube and Instagram.

Important Information Regarding Forward-Looking Statements:

The information in this release contains forward-looking statements regarding future events that involve risks and uncertainties. All statements other than statements of historical facts contained in this release are forward-looking statements. Our actual results may differ materially from those contemplated by the forward-looking statements. For further information regarding risks and uncertainties associated with Sonus’ business, please refer to the “Risk Factors” section of Sonus’ most recent annual or quarterly report filed with the SEC. Any forward-looking statements represent Sonus’ view only as of the date on which such statement is made 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.

For Sonus:

Mark Greenquist +1-978-614-8200
mgreenquist@sonusnet.com