Sonus Appoints William Hartwell Vice President of Federal Government Sales

Sonus Networks, Inc. (Nasdaq: SONS), a global leader in enabling and securing real-time communications, today announced that William Hartwell has been appointed vice president of Federal Government Sales at Sonus effective immediately. Hartwell will be responsible for driving revenue growth and the execution of strategic programs for Sonus’ Federal business. Currently, Sonus solutions span more than 350 United States government locations.

Prior to Sonus, Hartwell led Riverbed Technology’s federal presence as the company’s vice president of Federal Government Sales, where he was responsible for implementing Riverbed’s “IT Performance” solutions and services for Wide Area Network (WAN) Optimization, Application Acceleration, Network Visibility and Continuous Monitoring throughout the United States federal civilian agencies, Department of Defense (DoD) and intelligence community.

Before Riverbed, Hartwell was vice president of Business and Channel Development of Government Markets at Motorola Solutions, where he developed teams to drive enterprise mobility solutions into the public sector. Hartwell also spent nine years at Cisco Systems as operations director where he managed and developed senior sales, systems engineering, channels and business development teams equipped with extensive customer and industry knowledge across all federal markets for L2/L3 networking solutions.

Hartwell resides in Virginia.

“Growing our federal footprint beyond our current United States government locations is a top priority for our company,” said Michael Swade, senior vice president, Worldwide Sales, Sonus. “Bill brings more than 20 years of experience to Sonus and possesses the critical skills required to assess, enhance and execute our strategy of expanding sales and strategic programs in the federal space.”

“As United States government communication networks transition from TDM to SIP, an increase in demand is created for solutions that bring interoperability to ensure real-time communications are delivered reliably, securely and without compromise,” said Hartwell. “Sonus has conducted extensive work to ensure that the Sonus solutions meet stringent government agency requirements and I look forward to expanding our presence and reach within this market.”

William Hartwell, Sonus Networks, federal government sales, U.S., Department of Defense, DoD

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), Network-as-a-Service (NaaS) capabilities, Policy/Routing servers and media/signaling gateways. Visit www.sonus.net or call 1-855-GO-SONUS.

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’ views 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.

Jason Vancura, +1 -978-614-8321
jvancura@sonusnet.com