RADVISION SCOPIATM Technology Demonstrated At the Core of Video-enabled Unified Communications

ORLANDO, FLORIDA and TEL AVIV (March 17, 2008) –

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 that during March 17th – 19th at the VoiceCon exhibition in Orlando, RADVISION will demonstrate multiple technology integrations with its unified communications partners showcasing the power of unified visual communications with RADVISION technology at the core.

“Conferencing solutions are going through dramatic changes with two major trends occurring — room based video conferencing is moving to higher video quality with high definition and telepresence, and new unified communications solutions promise to bring conferencing to the desktop and mobile users — both driving the need for new levels of scalability and device support,” said Zeev Bikowsky, General Manager Networking Business Unit for RADVISION. “We understand these needs and are very proud to show our partners’ solutions leveraging our technology.”

At VoiceCon booth 417, RADVISION will be demonstrating:

* IBM Lotus Sametime with multiparty audio and video from the SCOPIA Conferencing Platform
* Microsoft Office Communications Server 2007 video conferencing connectivity via SCOPIA
* Cisco Unified Videoconferencing powered by SCOPIA technology
* Cisco Unified Video Advantage with multiparty audio and video from SCOPIA technology

IBM Lotus Sametime with multiparty audio and video from the SCOPIA Conferencing Platform

RADVISION’s SCOPIA Conferencing Platform with SCOPIA Desktop brings advanced conferencing capability to IBM’s next generation unified communications and collaboration platform enhancing the instant messaging and conferencing capabilities of Lotus Sametime by enabling users to create and initiate multiparty audio and video conferences directly from within Lotus Sametime. By adding RADVISION’s unique video and audio plug-in to Lotus Sametime, users can easily extend Lotus Sametime instant messaging chat sessions into full multiparty audio and video sessions on their PC and extend those conferences to other devices such as room based video conferencing systems, 3G videophones or virtually any telephone available today.

Microsoft Office Communications Server 2007 video conferencing connectivity via SCOPIA

The new SCOPIA Office Communications Server (OCS) 2007 Connector enhances the latest Microsoft unified communications offering providing the capability for Office Communicator users to participate in conferences with standards-based video conferencing systems and devices. The SCOPIA Connector is a simple to use, highly flexible tool allowing OCS 2007 users to join a meeting hosted on the SCOPIA Conferencing Platform. Now Office Communicator desktop users have full interoperability with video conferencing room systems including the latest HD (High Definition) endpoints with continuous presence multipoint video.

Cisco Unified Videoconferencing powered by SCOPIA technology

The Cisco Unified Videoconferencing System is integrated into Cisco Unified Communications to enable connectivity with a broad range of room and desktop video systems and communications environments. RADVISION provides the infrastructure for Cisco Unified Videoconferencing, including MCUs, Gateways and software for setting up and managing video sessions. Cisco Unified Videoconferencing now includes a desktop video component that extends the capabilities of the Cisco Unified Videoconferencing MCU to remote users with a free, Web-based client, H.239 data collaboration, embedded firewall and NAT traversal and conference streaming. This provides the same continuous presence and data sharing capabilities as video conferencing room systems extending their reach and impact.

Cisco Unified Video Advantage with multiparty audio and video from SCOPIA technology

Cisco Unified Video Advantage adds video to the communications experience by providing video telephony functionality to Cisco Unified IP phones. Using the familiar phone interface, video calls can be made and received on the Cisco Unified IP phone with the video component displayed on a PC. Leveraging RADVISION SCOPIA technology, the solution delivers advanced multiparty desktop video conferencing, and connectivity with third-party systems, that supports existing and future conferencing investments.

Additional demonstrations at VoiceCon showcasing RADVISION technology include Alcatel-Lucent OmniTouch My Teamwork integrated with RADVISION’s SCOPIA video conferencing platform at Alcatel-Lucent’s booth 711; and Cisco Unified Contact Center Enterprise integrated with RADVISION’s SCOPIA Interactive Video Platform at Cisco’s booth 601.

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. 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