RADVISION DEVELOPING SESSION INITIATION PROTOCOL TECHNOLOGY.RADVision Inc. (Nasdaq: RVSN RVSN Radvision (stock symbol) RVSN Recorded Volume Serial Number (Veritas) RVSN Raketnye Voiska Strategicheskogo Naznacheniya (Russian strategic rocket forces) ), Mahwah, N.J., a provider of award-winning, industry-standard products and technology for real-time voice and video communication over IP, is developing Session Initiation Protocol (protocol) Session Initiation Protocol - (SIP) A very simple text-based application-layer control protocol. It creates, modifies, and terminates sessions with one or more participants. Such sessions include Internet telephony and multimedia conferences. It is described in RFC 2543. (SIP) technology to complement its H.323 and MGCP See MGCP/MEGACO. MGCP - Media Gateway Control Protocol family of V2oIP toolkits for real-time voice and video over IP. SIP is a new text-based Internet signaling protocol It is a protocol used to identify signaling encapsulation. Signaling is used to identify the state of connection between telephones or VOIP terminals ( IP telephone or PCs or VoWLAN units ). List of signaling protocols:
IETF - Internet Engineering Task Force ). H.323, the Call Signaling protocol defined by the International Telecommunications Union See ITU. (body, standard) International Telecommunications Union - (ITU) ITU-T, the telecommunication standardisation sector of ITU, is responsible for making technical recommendations about telephone and data (including fax) communications systems for PTTs and suppliers. (ITU-T See ITU. ITU-T - International Telecommunications Union ) in 1996, was the first industry standard defined for IP telephony and multimedia communications over packet networks. Because of the overlap between the scope of SIP and H.323, work is currently underway to define interworking (standard) interworking - Systems or components, possibly from different origins, working together to perform some task. Interworking depends crucially on standards to define the interfaces between the components. between the two protocols. "Both H.323 and SIP are call-signaling protocols that define mechanisms for call routing, call signaling, capabilities exchange, media control, and supplementary services. Next generation networks will have to deliver end-to-end interoperability across multiple protocols. Therefore, it is imperative to strive for seamless interworking between H.323 and SIP. From a user's point of view, the signaling protocol they are using should be transparent," said Orit Levin, RADVision's director of Product Management. Levin, who was recently appointed as ITU-T Editor of Annex O for work on Internet technologies complementary to H.323, continues, "As a pioneer and leader in the development and implementation of the H.323 Protocol, RADVision has tremendous know how to contribute to clarifying the relationship between the two protocols. We have always been champions of interoperability and we are committed to playing an active role in the definition of seamless convergence of SIP and H.323." Resembling HTTP HTTP in full HyperText Transfer Protocol Standard application-level protocol used for exchanging files on the World Wide Web. HTTP runs on top of the TCP/IP protocol. and SMTP (Simple Mail Transfer Protocol) The standard e-mail protocol on the Internet and part of the TCP/IP protocol suite, as defined by IETF RFC 2821. SMTP defines the message format and the message transfer agent (MTA), which stores and forwards the mail. , SIP's high scalability makes SIP suitable to all IP solutions, including enterprise and carrier class. SIP's architecture uses a client/server model where requests are originated by user agents and routed by Proxy and Redirect Server. In addition, SIP's extensibility serves to create numerous Internet-based services. About RADVision RADVision is a leading provider of products and technology that enable real-time voice; video and data communications over packet networks, including the Internet and other networks based on the Internet protocol or IP. RADVision's products and technology are used by RADVision customers to develop systems that enable enterprises and service providers to use next generation packet networks for real-time IP communications. RADVision is actively involved in the development of the industry standards that are driving the emergence and growth of the use of packet networks for real-time communications, and was the first-to-market with enabling technology and the products required for the transmission of real-time voice, video and data over packet networks. As a result, RADVision is well positioned to lead the market with products and technology that enable enterprises and service providers to migrate their voice and video communications from traditional telephone networks to next generation packet networks. The company's products and technology include standards-based gateways, conferencing bridges, gatekeepers and software toolkits. For more information, visit http://www.radvision.com or call 201-529-4300, ext. 305. |
|
||||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion