"Businesses around the world rely on WebEx and the WebEx MediaTone Network, and we required a technology partner that could deliver a solution with the reliability and performance our customers demand," Shawn Farshchi, CIO, WebEx Communications. "As a leader in the VoIP market, Sonus delivered a solution that met all our current web conferencing requirements and provided the flexibility to support future web meeting applications."

"We are pleased that WebEx selected Sonus to enhance its network and expand its VoIP architecture," said Bert Notini, president and COO, Sonus Networks. "WebEx is a recognized leader in the rapidly growing web meeting applications market, and its decision to augment its existing audio conferencing offering with a Sonus-based solution demonstrates the strength of Sonus' technologies and our ability to provide best-of-breed services to businesses looking for a competitive edge."

"Service providers and enterprises looking to offer new services are turning to VoIP. This new network architecture opens the possibility for the development of more vertical and more customized applications," said Danny Klein, senior analyst at the Yankee Group. "The move by WebEx to migrate its audio conferencing capabilities to IP is significant in that it will enable WebEx to combine content and voice seamlessly, and to develop additional features. As a veteran in the VoIP industry, Sonus is helping to drive the growth of enhanced services such as IP web conferencing by providing carrier-class solutions."

WebEx Communications, Inc. is the world's leading provider of on-demand web meeting applications. WebEx applications improve collaboration and increase productivity in sales, support, training, marketing, engineering and product design. The WebEx suite of web meeting applications are built on the MediaTone platform and delivered over the global WebEx MediaTone Network, a network specifically designed for secure, real-time web collaboration. WebEx Communications is based in San Jose, California and has regional headquarters in Europe, Asia and Australia. Visit www.webex.com for more information.

Sonus Networks, Inc. is a provider of voice over IP (VoIP) infrastructure solutions for wireline and wireless service providers. With its Open Services Architecture(TM) (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.