Sonus Networks Executives to Speak at Fall 2002 VON

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WESTFORD, Mass., October 2, 2002 – At the Fall 2002 Voice on the Net (VON) next week, Sonus Networks (Nasdaq: SONS) will highlight technology trends in packet voice infrastructure and related services through participation in several conference presentations. Fall 2002 VON is being held October 7-10, 2002 at the Cobb Galleria in Atlanta, GA.

Industry experts from Sonus are taking an active role in the educational portion of the conference, and will be participating in the following sessions:

Tuesday, October 8, 2002, 5:00 pm – 6:15 pm
Session: State of the Industry: From Silicon to the Customer
Speaker: Hassan Ahmed, president and CEO

Thursday, October 10, 2002, 2:00 pm - 3:15pm
Session: Media-Aware Features in IP Gateways
Speaker: Mike Hluchyj, founder and CTO

Additional information on Fall 2002 VON can be found at http://pulver.com/von/.

About Sonus Networks

Sonus Networks, Inc., is a leading provider of packet voice infrastructure products for the new public network. With its Open Services Architecture (OSA), Sonus delivers end-to-end solutions addressing a full range of carrier applications, including trunking, residential access and Centrex, tandem switching, and IP voice termination, as well as enhanced services. Sonus' award-winning voice infrastructure solutions, including media gateways, softswitches and network management systems, are deployed in service provider networks worldwide. Sonus, founded in 1997, is headquartered in Westford, Massachusetts. Additional information on Sonus is available at http://www.sonusnet.com.

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