For more information, please contact:

VON Europe 2004 – Stand No. 35

CHELMSFORD, Mass., June 2, 2004 – Executives from Sonus Networks (Nasdaq: SONSE), a leading provider of voice over IP (VoIP) infrastructure solutions, will deliver presentations on key industry trends and issues during the VON Europe 2004 conference and exhibition being held June 7-10, 2004 at London Olympia.  In addition to participating in the pre-conference workshop and main conference sessions, Sonus will also be exhibiting at the show.

Sonus speakers and topics scheduled to appear at the VON Europe conference include:

Monday, June 7, 2004, 10:55 am
Session: Pre-Conference Workshop: PSTN/IP Gateways and Softswitches
Speaker: Neil Kinder, Technical Director EMEA

Tuesday, June 8, 2004, 3:00 pm
Session: 3G & IP
Speaker: Neil Kinder, Technical Director EMEA

Pulver.com’s VON Europe 2004 conference begins on Monday, June 7, 2004 with pre-conference workshops and will conclude on Thursday, June 10, 2004.  All events will be held at the Olympia Conference Centre in London.  VON Europe 2004 is the leading conference and exhibition for the IP communications industry and is attended by carriers, service providers, mobile operators and vendors.  At this year’s event, the industry will be focusing on the mainstream adoption of VoIP and the key issues that surround it as well as the new applications, services and benefits it brings.

For more information on VON Europe 2004 visit www.voneurope.com.

About Sonus Networks

Sonus Networks, Inc. is a leading provider of voice over IP (VoIP) infrastructure solutions for wireline and wireless service providers.  With its Open Services ArchitectureTM (OSA), Sonus delivers end-to-end solutions addressing a full range of carrier applications, including trunking and tandem switching, residential and business access, network border switching and enhanced services. Sonus’ 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 Chelmsford, Massachusetts.  Additional information on Sonus is available at http://www.sonusnet.com.

Sonus is a registered trademark of Sonus Networks.  Open Services Architecture, GSX9000, Insignus and Sonus Insight are trademarks of Sonus Networks.  All other trademarks, service marks, registered trademarks, or registered service marks are the property of their respective owners.