Company’s Architecture Recognized as Key Contribution to the Internet Telephony Industry

WESTFORD, Mass., July 19, 2000 – Sonus Networks (Nasdaq: SONS), a leading provider of voice infrastructure products for the new public network, today announced it has received the first annual TMC Labs Innovation Award from Internet Telephony magazine.  Sonus’ Open Services Architecture™ (OSA) was one of 20 technologies chosen by TMC for its innovation, uniqueness, and significant contribution to the Internet telephony industry during the last 12 months. 

 “Sonus Networks is a pioneer in the field of packet-based IP networks,” said TMC president and group editor-in-chief Rich Tehrani.  “The TMC Labs Innovation Award gives us the opportunity to recognize and reward companies like Sonus that are leading the way in developing leading-edge solutions for the Internet telephony market.”

 “We are delighted to receive the inaugural innovation honor from TMC,” said Hassan Ahmed, Sonus’ president and chief executive officer.  “Our open architecture is the foundation of Sonus’ voice infrastructure solutions and is the unifying element that allows our business partners and customers to quickly develop new applications and services.  We gratefully accept this award.”

 Sonus’ Open Services Architecture is an open telephony architecture that provides a framework in which carriers can develop an unlimited number of new and innovative services in “Internet time”.  The OSA also provides a robust, carrier-class infrastructure for moving voice over data.  Components of the OSA include sophisticated software, network management capabilities, open protocol interfaces, and an award-winning product suite.  Sonus’ Packet Telephony suite comprises the GSX9000 Open Services Switch, the PSX6000 SoftSwitch, the SGX2000 SS7 Signaling Gateway and the System 9200 Internet offload solution. 

About Sonus 

Sonus Networks, Inc. is a leading provider of voice infrastructure products for the new public network.  Sonus’ solutions enable service providers to deploy an integrated network capable of carrying both voice and data traffic, and to deliver a range of innovative, new services.  The Sonus Open Services Architecture (OSA) and award-winning Packet Telephony suite cut the time-to-market for competitive new service products, allowing carriers and third-party developers to expand marketshare and build important new revenue streams.  Its highly scalable products fully interoperate with and extend the life and utility of today’s public network.  Sonus embodies in its management and staff decades of experience in developing carrier-class voice, data and multimedia solutions for implementation in the world’s largest networks.  Sonus, founded in 1997, is headquartered in Westford, Massachusetts. 

Open Services Architecture, GSX9000, PSX6000, SGX2000 and System 9200 are trademarks of Sonus Networks.  All other company and product names may be trademarks of the respective companies with which they are associated. 

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