New Functionality Makes RADVISION SIP Toolkit Ideal Developer Platform

RADVISION (NASDAQ:RVSN) today announced the general availability of version 3.1 of its award-winning SIP Developer Toolkit, an industry-leading developer platform for the development of SIP-based IP communications products.

Significant new features in version 3.1 include supports for the Symbian, Nucleus, and pSOS Real Time Operating Systems (RTOS), improved security behavior with TLS, improved TCP/UDP networking performance, improved efficiency and resource control, and new Sigcomp functionality, a necessary compression signaling module for the development of wireless/mobile SIP-based communication devices.

Boasting over 30 new features and functionality that dramatically improve the developer's ability to create advanced SIP-based communications products, RADVISION's award-winning SIP Developer Toolkit now features the broadest array of supported operating systems on the market today as well as high and low level APIs that provide the maximum in product development flexibility.

"SIP-based communications over the last few years has evolved from just offering basic functionality to now addressing the higher level features and functionality needed to roll out advanced packet-based communications," said Adi Paz, Director of Product Management and Marketing for RADVISION's Technology Business Unit. "With the newest version of our SIP Developer Toolkit, equipment developers can now easily and quickly develop the solutions that will enable them to both save money, increase time-to-market, ensure standards-interoperability all in an easy-to-use developer architecture."

Support of Even More Operating Systems

As SIP-based communications becomes even more pervasive through the spectrum of communications products, there has been an explosion of specialized operating systems - each specifically developed for a unique platforms or application. The RADVISION SIP Developer Toolkit v3.1 now features functionality specifically modified to operate on the Symbian, Nucleus, and pSOS operating systems. Symbian is a very popular open standard operating system for data-enabled mobile phones. Nucleus is a popular Real Time Operating System (RTOS) specifically used for consumer, wireless and networking applications. pSOS is a modular, high-performance, memory protected real-time operating system designed specifically for embedded microprocessors.

With these three new supported operating systems, the RADVISION SIP Developer Toolkit now supports 11 operating systems including Solaris, Linux RedHat, VxWorks, Windows, Linux MontaVista, Embedded Linux, Widows CE, and INTEGRITY.

Support of Sigcomp

Version 3.1 of the RADVISION SIP Developer Toolkit features an optional module for Signaling Compression (Sigcomp) that enables compressing SIP signaling. Since SIP messages are text based, they are not optimized in terms of size which, while not normally a problem in wireline broadband, becomes an issue in limited bandwidth applications for real-time communications such as over mobile or wireless networks. As such, the 3GPP (Third Generation Partnership Project) now requires mandatory message compression through Sigcomp for IMS (IP Multimedia Subsystem) applications and products - a requirement met with this new advanced Sigcomp functionality in the RADVISION developer platform.

DLA (Dynamic Local Address) Translation for NAT/Firewall Traversal

As IP telephony systems are now expected to provide more functionality than a traditional PBX, NAT traversal for IP communications has become a crucial element in a communication architecture. Version 3.1 of the RADVISION SIP Developer Toolkit enables the development of VoIP communication products with dynamic local address changing. Developed in response to numerous customer requests, this functionality enables a communication device to dynamically modify an IP address of an internal SIP device during a call, making it an ideal solution for gateway developers whose product mediates between public IP address schema and a private Local Area Network (LAN) using dynamic IP addressing.

Enhanced Type of Service (TOS) Functionality

Version 3.1 also features new functionality for defining Type of Service (TOS) call routing. This is a particularly crucial feature for any developer of SIP-based enterprise communication systems. This new functionality allows the developer to set socket options (dialog, transaction, Reg, Subscription levels, etc.) for different types of services where, in order to maintain voice quality, traffic from voice or video applications is identified and given priority in routing through a data network.

Modified Common Core

The new SIP Developer Toolkit v3.1 features a new core that is common to all of RADVISION's other protocol developer toolkits. This new core means that all products developed with a RADVISION toolkit within a particular operating system will share the same common core or "stack." While not necessary for interoperability, the Company believes that developing multiprotocol solutions that all share a common core is a powerful advantage to ensure complete interoperability and seamless functionality.

Availability

RADVISION's SIP Developer Toolkit v3.1 is currently available worldwide.

Contacts

RADVISION
Corporate Contacts:
Tsipi Kagan, 201-689-6340
cfo@radvision.com
or
Peter Benedict, 201-689-6311
pr@radvision.com
or
Investor Relations:
Comm-Partners LLC
June Filingeri, 203-972-0186
junefil@optonline.net