RADVISION's IP Phone Toolkit Wins INTERNET TELEPHONY 2003 Product of the Year Award.

Business Editors/High-Tech Writers

GLEN ROCK, N.J.--(BUSINESS WIRE)--Jan. 6, 2004

INTERNET TELEPHONY Chooses Revolutionary

Multiprotocol IP Phones Development Toolkit For Coveted Honor

RADVISION (Nasdaq: RVSN) today announced that its IP Phone Toolkit, the newest member of the company's V2oIP(R) ENSEMBLE(SM) suite of development solutions for voice and video over IP and 3G wireless products and applications, has been named by INTERNET TELEPHONY(R) magazine as a Product of the Year for 2003.

Leveraging RADVISION's extensive experience in VoIP protocols and communication applications, this toolkit is unique in the industry for providing chipset vendors and IP phone developers with all the necessary software components to build powerful IP phone solutions.

RADVISION's IP Phone Toolkit is available in multiple VoIP protocols including: SIP, H.323, and Megaco/H.248, and provides a rich set of features and services that enable Customer Premises Equipment (CPE) manufacturers to implement fully-functional IP phone applications with minimal effort. The product supports advanced business phone services such as conferencing, transfer, hold, and caller ID, in addition to basic phone support.

"RADVISION's driving goal has been to provide solution developers with a software toolkit that delivers the core functionality and ease of use needed to deliver a differentiated, feature-rich enterprise VoIP solution," said Boaz Raviv, General Manager of RADVISION's Technology Business Unit. "RADVISION's new IP Phone Toolkit meets the stringent technical demands of delivering advanced IP telephony features in a solution that supports a wide range of chipsets, media processing, and hardware implementations and INTERNET TELEPHONY's designation of it as a Product of the Year reinforces our belief that this is a revolutionary product."

"Our Product of the Year award recognizes outstanding technologies and approaches to delivering and enabling next generation voice and video for service providers and enterprises," said Greg Galitzine, editorial director of INTERNET TELEPHONY. "There were many strong contenders this year for such an award but RADVISION's IP Phone Toolkit was obviously one of those technologies that we see as having the potential to spur the development of advanced, feature-rich IP-based communications solutions for the enterprise."

About RADVISION's IP Phone Toolkit

A complete IP phone solution is achieved by integrating the RADVISION IP Phone Toolkit with DSP Services (voice compression/decompression, echo cancellation, VAD, etc) and Telephony Hardware Services (hook state, key state, handset, etc), both of which would be provided by the developer or a third-party. RADVISION has designed its IP Phone Toolkit to be easily portable across a variety of IP Phone chipsets. Additionally, RADVISION has also worked closely with leading silicon vendors to help provide pre-integrated solutions for their chipset services.

Applications written with the RADVISION IP Phone Toolkit are insulated from the underlying protocols and call/media control mechanisms. As such, developers can use the RADVISION IP Phone Toolkit to create products for SIP, H.323, and Megaco/H.248 networks using the same application.

RADVISION's advanced IP Phone Toolkit provides:

-- support for a wide range of System-On-Chip (SoC), media

processing and board-level designs;

-- complete IP Phone functionality including basic dial services,

caller ID, call hold, and advanced services such as transfer

and conference;

-- proven, standards-based VoIP call and media control for

various voice over IP standards, including H.323, SIP, and

Megaco/H.248;

-- customizable Man-Machine Interfaces to allow phone vendors'

developers and designers to precisely define their own look

and feel;

-- support for analog lines empowering residential gateway

solutions that support IP telephony using existing phones; and

-- support for a wide range of industry standard embedded and

native general-purpose operating systems.

Available as Stand Alone Product or Part of RADVISION Professional Services Offering

Like all RADVISION developer solutions, the IP Phone Toolkit is available as a stand along developer solution or in conjunction with RADVISION's ENSEMBLE(TM) Duet(TM) professional services offering.

ENSEMBLE Duet Professional Services assists partners and customers in bringing their innovative products to market on time. RADVISION experts are available to its professional services customers to respond to their development needs throughout the product design and development cycle, providing RADVISION protocol and system experts to aid in specifying, designing and delivering products that integrate RADVISION's core development solutions including SIP, H.323, MEGACO/H.248, MGCP and 3G-324M technologies.

ENSEMBLE Duet Professional Services delivers the following services:

-- initial consultation to help specify and design products

-- implementation services to augment the customers' own

engineering efforts

-- delivery of complete turn-key solutions

About Internet Telephony Magazine

The convergence of voice, video, fax, and data has revolutionized the world of telecommunications. Internet telephony has been proven to drastically reduce long-distance costs and continues to provide unprecedented opportunities for service providers, resellers, developers, and end users alike. Internet Telephony is the only magazine that focuses on providing the information that will help you take advantage of this exciting technology. Launched as a quarterly publication in January 1998, Internet Telephony(R) magazine has been published monthly since October 1998. Internet Telephony(R) provides readers with the best information necessary to learn about and purchase the equipment, software, and services they need to take advantage of Internet telephony.

About TMC 

Since 1972, Technology Marketing Corporation (TMC(TM)) has produced industry-leading trade magazines and events focused on technology and telecommunications. TMC(TM) publishes two magazines: Customer Inter@ction Solutions(TM) and Internet Telephony, and two online publications, Planet PDA(TM) Magazine and BiometriTech(TM) Magazine. TMC is also the first publisher to test new products in its own on-site laboratories, TMC Labs(TM), and provide factual and unbiased product reviews. TMC also produces INTERNET TELEPHONY Conference & Expo, Planet PDA(R): The Enterprise PDA Event and BiometriTech Conference & Expo. TMCnet.com publishes more than 25 topical online newsletters. For more information about TMC, visit its Web site at www.tmcnet.com.

About RADVISION

RADVISION (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.

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