SIP soft switching system supporting P2P media transmission and its implementation method

A technology of media transmission and implementation method, applied in the field of network communication, can solve problems such as poor controllability and manageability, lack of profit, sustainable development of operation mode, etc., achieve good controllability and manageability, improve communication quality, The effect of good compatibility

Active Publication Date: 2008-01-09
SHENYANG CALCULATION TECH INST CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the poor controllability and manageability of P2P applications in the prior art, and the lack of a profitable and sustainable operating model, the purpose of the present invention is to provide a signaling co

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  • SIP soft switching system supporting P2P media transmission and its implementation method
  • SIP soft switching system supporting P2P media transmission and its implementation method
  • SIP soft switching system supporting P2P media transmission and its implementation method

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[0044] 1. System structure

[0045] As shown in Figure 1, the SIP softswitch system supporting P2P media transmission of the present invention includes a signaling control server, a media relay server, a super relay service node, a STUN service node, and a P2P client or ordinary client, using the extended SIP protocol As the communication protocol of the signaling control layer, the signaling control server at the center of the system centrally processes and forwards; media transmission supports media relay server forwarding, point-to-point direct through ICE mode, and multiple paths for P2P network transmission; among them, P2P network transmission The path is optimized in accordance with the established strategy, and finally the communication terminal selects the media transmission path according to the established evaluation mechanism; the media stream transmission adopts an encryption method, and the encryption key is negotiated by the communication parties during the call est...

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Abstract

The system thereof comprises: a signaling controlling server, a media relay server, a supper relay serving node; a STUN serving node and some P2P client sides or some normal client sides. It uses an expanded SIP protocol as the communication protocol of the signaling control layer; the signaling controlling server located at the center of the system is used for processing the relaying of signaling. The method comprises: initializing system; making registration to the signaling controlling server; P2P client side is connected to the relay service coverage network and the STUN service coverage network; making self estimation; establishing the communication session between client sides; when current transmission path fails to cause the interruption of call; both P2P client sides are switched to the standby media transmission path.

Description

technical field [0001] The invention relates to network communication technology, in particular to a SIP soft switch system supporting P2P media transmission and its realization method. Background technique [0002] SIP (Session Initiation Protocol) is an application layer signaling control protocol defined by the IETF (Internet Engineering Task Force) MMUSIC (Multiple Multimedia Session Control) working group for creating, modifying and terminating multimedia sessions on IP networks. At present, the SIP protocol is constantly improving, and its ultimate goal is to provide ubiquitous access for all successful Internet applications. The SIP protocol gradually overcomes H.323, MGCP and other protocols to become the mainstream protocol of VoIP (Voice over Internet Protocol, Internet telephony or broadband telephony) due to its characteristics of being more open, easier to expand, and closely integrated with the Internet. support. [0003] P2P (short for peer-to-peer, "peer-to...

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Application Information

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IPC IPC(8): H04L29/06H04L12/56H04L29/08
Inventor 雷为民张伟张秀武贾军营于波刘丹林镜华杨磊
Owner SHENYANG CALCULATION TECH INST CHINESE ACAD OF SCI
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