RADVISION(R) Launches Version 5.1 of the SCOPIA(TM) Conferencing Platform.

SCOPIA v.5.1 Introduces Flat Capacity PLUS(TM), Ensuring Conferencing Users More Port Capacity at a Lower Cost per Port and the Latest Version of High Definition Support

FAIR LAWN, N.J. -- RADVISION (NASDAQ: RVSN), a leading provider of video network infrastructure and developer tools for unified visual communications over IP, 3G, and emerging next-generation networks, today unveiled version 5.1 of its SCOPIA platform which increases port capacity by 50 to 100 percent over the previous version and provides the latest support for high definition (HD) video and audio conferencing.

With this release, RADVISION is introducing Flat Capacity PLUS[TM], a new feature that ensures users receive maximum value for their investment. RADVISION previously announced the SCOPIA platform with Flat Capacity support allowing users consistent port capacity independent of video quality or network speeds used. With Flat Capacity PLUS[TM], users now gain unmatched flexibility to utilize capacity when using different levels of video and audio network speeds. If all the available bandwidth is not fully utilized, the number of available ports increases providing a reduced cost per port. This new feature adds powerful flexibility, and makes RADVISION's SCOPIA platform an even more cost-effective choice.

Also with this release RADVISION is making available the latest version of HD support, providing customers with the best video and audio quality available today without capacity loss and which is expected to be fully compatible with all major HD endpoint manufacturers.

"The release of SCOPIA v.5.1 reflects our continued commitment to offering the industry's most powerful, robust platforms for unified communications," said Yoav Nativ, Product Marketing Manager, RADVISION. "Our development of Flat Capacity PLUS and high definition support are a direct response to the market's needs. These unique features address specific optimization issues inherent in the diverse nature of videoconferencing, where not all sessions are the same. With Flat Capacity PLUS, users can leverage all the power of the MCU according to the right-sized configuration and capacity. With this release, we have strengthened our position as the premier provider of multiparty conferencing infrastructure for workflow and collaboration environments."

"RADVISION's commitment when launching the SCOPIA platform last year was to provide the most powerful, flexible and affordable platform in the market and continually improve it based on our customers needs," said Bob Romano, RADVISION Vice President, Enterprise Marketing. "This release of SCOPIA continues to deliver on that commitment. Flat Capacity PLUS provides users added value by making available more ports if all calls aren't utilizing high bandwidth. In addition, SCOPIA's support of HD allows customers to have multipoint videoconferences on the latest generation of high definition video conferencing devices. Users can now choose a single platform that will support high bandwidth HD calls, normal bandwidth standard definition calls as well as receive extra capacity for calls at lower bandwidth. That's flexibility,"

About RADVISION

RADVISION (Nasdaq: RVSN) is the industry's leading provider of market-proven products and technologies for unified visual communications over IP and 3G networks. With its complete set of standards-based video networking infrastructure and developer toolkits for voice, video, data and wireless communications, RADVISION is driving the unified communications evolution by combining the power of video, voice, data and wireless - for high definition videoconferencing systems, innovative services on converged IP and 3G networks, and highly scalable video-enabled desktop platforms for IP and emerging next-generation networks. For more information about RADVISION, visit www.radvision.com.

This press release contains forward-looking statements that are subject to risks and uncertainties. Factors that could cause actual results to differ materially from these forward-looking statements include, but are not limited to, general business conditions in the industry, changes in demand for products, the timing and amount or cancellation of orders and other risks detailed from time to time in RADVISION's filings with the Securities Exchange Commission, including RADVISION's Form 20-F Annual Report. These documents contain and identify other important factors that could cause actual results to differ materially from those contained in our projections or forward-looking statements. Stockholders and other readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date on which they are made. We undertake no obligation to update publicly or revise any forward-looking statement.