New Application for Award Winning SCOPIA Conferencing Platform Provides Advanced Video Conferencing System Interoperability to Microsoft Office Communications Server (OCS) 2007

TEL AVIV (February 26, 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 the availability of a significant enhancement to the SCOPIA® Conferencing Platform extending Microsoft® Office Communications Server capabilities – the new SCOPIA Microsoft OCS 2007 Connector.

RADVISION, a Microsoft Gold Certified Partner, has been a long-established partner with a history of support of Microsoft Real-Time Communications and Unified Communications solutions including Microsoft Live Communications Server 2003 and 2005, Outlook, and Active Directory. With the recent introduction of Microsoft Office Communications Server 2007, RADVISION is extending its support of the Microsoft Unified Communications product line with the new SCOPIA Microsoft OCS 2007 Connector.

The new SCOPIA OCS 2007 Connector enhances the Microsoft solution 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.

SCOPIA Conferencing Platform’s media processing capabilities allow mixed conferences of HD video systems, standard definition video systems, and video from desktops in the same call without requiring all participants to downgrade to their common capabilities. Each user participates in the conference at the highest capability available to them. SCOPIA provides the most affordable and flexible platform in the market with support for HD, standard definition, desktop, and 3G in a single solution with pricing and capacity optimized for each conferencing application.

Benefits of the SCOPIA OCS 2007 Connector include:

* A simple method for Office Communicator users to join SCOPIA hosted multi-party meetings.
* Conference moderation allowing Office Communicator users to invite, disconnect, and mute participants along with controlling other important aspects of the meeting.
* Support for HD (High Definition) providing interoperability to the latest video conferencing room systems available.
* Connectivity to H.323, SIP, ISDN, and 3G video conferencing systems providing support for existing and future conferencing investments.
* Full transcoding and media processing between various audio and video formats from 3G to HD video allowing each participant to utilize the highest quality available to them.
* A highly collaborative video experience where through Continuous Presence, multiple participants can be seen simultaneously.
* Efficient bandwidth utilization where the connection rate remains constant regardless of the number of participants viewed.

The SCOPIA Connector is available immediately and is included at no additional cost with SCOPIA 100 and 400 video conferencing solutions.

“Extending the Microsoft Unified Communications solution with the advanced media processing capabilities of the SCOPIA Conferencing Platform provides connectivity that has been requested by many of our customers,” said Zeev Bikowsky, General Manager Networking Business Unit for RADVISION. “Now Office Communicator users can have mixed conferences with nearly any type of device including the latest High Definition room systems available.”

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.

Trade names referred to above are the exclusive property of either Microsoft or RADVISION.

Source: RADVISION