RADVISIONâ??s SCOPIA High Definition Solution to be Demonstrated at IBM Lotusphere

TEL AVIV (January 19, 2009) –

RADVISION® Ltd. (Nasdaq: RVSN), a leading provider of video network infrastructure and developer tools for unified visual communications over IP, 3G and emerging next-generation IMS networks, today announced significant enhancements to its SCOPIA conferencing platform bringing high definition (HD) desktop video conferencing to IBM® Lotus® Sametime® instant messaging and web conferencing further extending its support of IBM’s unified communications and collaboration platform.

RADVISION’s SCOPIA multipoint conferencing unit with SCOPIA Desktop maximizes a Sametime real-time unified communications and collaboration investment by turning it into a complete HD video conferencing solution. With RADVISION’s unique Sametime plug-in, users can easily add multipoint HD video to Lotus Sametime instant messaging or web conferencing sessions on their PC and extend those sessions to HD video conferencing room systems, videophones and 3G mobile devices.

SCOPIA Desktop is designed to meet the demands of high performance video conferencing with a standard PC, webcam and Internet connection making it a highly effective communications tool. The video subsystem is designed to deliver high definition H.264 image quality with low latency while being efficient on processor and network bandwidth. Its advanced audio system provides echo cancellation, background noise suppression and is highly resilient to network errors common on the Internet.

The SCOPIA solution also includes capabilities to simplify use and deployment in an IBM environment. IBM Lotus Notes support provides integration with the Notes calendaring function for simple conference scheduling. Additionally, Domino directory integration simplifies access and provisioning where users can be authenticated directly against existing enterprise credentials.

RADVISION was recently chosen as Telepresence and Video Conferencing Insight’s “Video-enabled Unified Communications Company of the Year” for its SCOPIA solution that incorporates HD desktop video conferencing into unified communications. SCOPIA’s latest enhancements to IBM Sametime’s capabilities further expand RADVISION’s extensive unified communications portfolio now including video integration capabilities to Alcatel-Lucent, Cisco®, IBM® and Microsoft® unified communications solutions.

“RADVISION’s SCOPIA Desktop with high definition video capabilities delivers the essential features required for widespread adoption of desktop video conferencing,” said Zeev Bikowsky, General Manager, Networking Business Unit for RADVISION. “Many users investing in today’s leading unified communications solutions like IBM Lotus Sametime have already deployed room video conferencing and want a solution that fully supports and interoperates with those systems including providing a similar high definition experience to the desktop”

RADVISION will be demonstrating the new SCOPIA HD conferencing platform for Lotus Sametime at the Lotusphere 2009 Product Showcase in Orlando – booth 532 opening today.

About RADVISION

RADVISION (Nasdaq: RVSN) is the industry’s leading provider of market-proven products and technologies for unified visual communications over IP, 3G and IMS 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 video conferencing systems, innovative converged mobile services, and highly scalable video-enabled desktop platforms on IP, 3G and emerging next-generation IMS networks. To gain additional insights into our products, technology and opinions, visit blog.radvision.com. For more information about RADVISION, visit http://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.

Source: RADVISION