InterCall, Glowpoint and RADVISION Partner to Deliver Advanced Video Capabilities for Microsoft Office Live Meeting

Business Wire, April 27, 2006

OMAHA, Neb. & HILLSIDE, N.J. & FAIR LAWN, N.J. -- RADVISION Ltd. (Nasdaq: RVSN):

InterCall's Microsoft Office Live Meeting Customers Will Benefit from Enhanced Multi-participant Video Capabilities Delivered over Glowpoint's Advanced Video Network Utilizing RADVISION's Click to Meet for Microsoft Office

E[acute accent]InterCall, the largest conferencing service provider in the world, GlowPoint, Inc. (OTC: GLOW.PK), the world's leading broadcast-quality IP-based video communications service provider, and RADVISION (Nasdaq: RVSN), the leading provider of scalable multimedia conferencing and communications platforms and related solutions, announced today that they have partnered together to deliver an advanced video conferencing service for use with Microsoft Office Live Meeting, an online collaboration and web conferencing service. The solution, which seamlessly integrates into Microsoft's widely used collaboration service, brings together RADVISION's award winning Click to Meet(TM) for Microsoft Office solution with Glowpoint's broadcast quality IP-video network. Initial availability of this solution will be offered to InterCall's extensive customer base. InterCall is a major reseller of Microsoft's Live Meeting service and plans to make this service available to their Live Meeting customers beginning April 28th. E[acute accent]Click to Meet for Microsoft Office offers a scalable communications system that adds integrated multi-participant PC-based video and audio functionality to Live Meeting and Microsoft Office Live Communications Server 2005. The pairing of RADVISION's Click to Meet with Glowpoint's IP-video enhanced network will allow InterCall to provide Live Meeting subscribers a rich audio, visual and data collaboration experience. E[acute accent]"Many of our customers have asked us for ways they can use Click to Meet for Microsoft Office, without having to deploy and manage the technology themselves," said Bob Romano, Vice President of Enterprise Marketing for RADVISION's Networking Business Unit. "The combination of Microsoft Live Meeting's feature rich web conferencing, Glowpoint's specialized IP-Video network and Click to Meet's advanced multi-stream video technology will provide InterCall's customers with the richest collaboration experience available today." E[acute accent]"Enhancing Live Meeting with multi-participant video provides more productive and interactive collaboration for our customers," said Marc Sanders, Senior Product Manager in the Unified Communications Group at Microsoft. "InterCall's Live Meeting customers will now experience meetings that are more like face-to-face than ever before." E[acute accent]"We are always looking for new and interesting ways to increase the quality and capabilities of web collaboration and video conferencing, and this integration with RADVISION's Click to Meet allows us to do just that," said Michael Brandofino, Chief Executive Officer of Glowpoint. "We are very excited to be working with InterCall and RADVISION and look forward to providing an exceptional experience to their customers."

E[acute accent]About Glowpoint E[acute accent]GlowPoint, Inc. (OTC: GLOW.PK) is the world's leading broadcast quality, IP-based video communications service provider. Glowpoint offers video conferencing, bridging, technology hosting and IP broadcasting services to enterprises, SOHOs, broadcasters and consumers worldwide. The Glowpoint network carries on average over 60,000 video calls per month worldwide. Glowpoint is headquartered in Hillside, New Jersey. To learn more about Glowpoint, visit us at www.Glowpoint.com.

E[acute accent]About InterCall E[acute accent]InterCall, a subsidiary of West Corporation, is the largest service provider in the world specializing in conference communications. Founded in 1991, InterCall helps people and companies be more productive by providing advanced audio, event, Web and video conferencing solutions that are easy-to-use and save them time and money. Along with a team of over 500 Meeting Consultants, the company employs more than 1,500 operators, customer service representatives, call supervisors, accounting, marketing and IT professionals. InterCall's strong US presence, which includes four call centers and 26 sales offices, is bolstered by a global reach that extends to Canada, the United Kingdom, Ireland, France, Germany, Australia, New Zealand, Hong Kong, Singapore, Japan and India. For more information, please visit www.intercall.com

E[acute accent]About RADVISION E[acute accent]RADVISION LTD. (Nasdaq: RVSN) is the industry's leading provider of high quality, scalable and easy-to-use products and technologies for videoconferencing, video telephony, and the development of converged voice, video and data over IP and 3G networks. For more information please visit our website at www.radvision.com.

E[acute accent]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 and services, the timing and amount or cancellation of orders and other risks detailed from time to time in RADVISION,s, Intercall's and Glowpoint's filings with the Securities Exchange Commission, including the companies' Annual Reports. 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.