Leading Vendors Initiate Voice and Video Over IP Quality Alliance

Alliance to Further Adoption of Best Practices and Advancement of High Quality Implementations for IP-based Voice and Video Products and Services

VON Fall - Boston - September 11, 2006 –Ditech Networks (Nasdaq: DITC), Empirix, Global IP Sound, JDSU (Nasdaq: JDSU), Polycom (Nasdaq: PLCM) and Telchemy jointly announced today that they will take a leading role in establishing the V2oIP Quality Alliance (www.v2oipqualityalliance.org), an alliance of communication industry innovators that will help shape and support the direction of voice and video-over-IP (V2oIP) quality issues. The new alliance will combine the expertise of key technology providers, service providers and industry experts to define industry best practices as well as help educate the market about relevant technologies, standards, and deployment methods.

"I am pleased to see vendors, service providers, and industry experts collaborating under the Alliance umbrella and furthering the IP Communications space," stated Jeff Pulver, chairman of pulver.com.

“One of the most important areas of voice and video over IP is quality”, said Paul Waadevig, Industry Manager for Frost & Sullivan’s Conferencing & Collaboration practice. “We believe that a proactive, cooperative industry effort focused on understanding, measuring and improving quality will accelerate development and deployment of high-quality IP voice and video solutions and services, while helping avoid some of the pitfalls that are commonly encountered with wide adoption of emerging technologies.”

About V2OIP Quality Alliance
The V2OIP Quality Alliance is a new industry group comprised of vendors, service providers and industry experts that wish to increase the adoption of voice and video over IP collaborating by providing information leading to the advancement of voice and video quality technologies and implementations.

The V2oIP Quality Alliance will include a diverse range of V2oIP solution vendors, service providers, system integrators, and forward-looking enterprises—each of whom offers a unique perspective on V2oIP issues. Vendors will be able to contribute information and expert content on V2oIP quality. Other Alliance members will gain a single source of qualified information and expertise, as well as the ability to collaborate on new solutions and provide feedback on V2oIP development efforts.

The V2oIP Quality Alliance is currently being organized. Prospective members may contact Joel Fisher, director of strategic marketing for Ditech Networks at jfisher@ditechnetworks.com or 650-623-1356.