H.323-SIP信令网关的实现

[摘要] H.323和会话初始化协议(SIP)都是基于IP网络的多媒体通信协议，采用实时传送协议(RTP)传送实时的音频视频传输，二者之间可以通过设置信令网关互通，完成信令消息的翻译和转换功能。要实现H.323与SIP网络之间的互通，必须解决地址格式的转换、消息映射和终端能力协商等方面的问题。H.323-SIP信令网关在H.323和SIP互通中占有得要的地位，它能够使位于不同网络的用户直接和对端进行媒体交换，实现点到点、点到多点之间的通信。H.323-SIP信令网关的功能会越来越完善，也会越来越适应用户更加广泛的业务需要。

[关键词] H.323-SIP信令网关；SIP网络；H.323网络

[Abstract] H.323 and Session Initiation Protocol (SIP) are IP-based multimedia network communications protocols using Real-time Transfer Protocol (RTP) to transmit real-time audio and video. The signaling gateway can be set up between the H.323 network and the SIP network to complete the signal translation and conversion functions. To achieve interoperability between H.323 and SIP networks, the address format conversion, message mapping and terminal capability negotiation should be solved. The H.323-SIP signaling gateway is important for the interoperability of H.323 and SIP networks, and enables users in different networks to communicate directly and achieve Peer-to-peer (P2P) and Peer-to-multipeer (P2MP) communications. The functions of H.323-SIP signaling gateway will become increasingly sound and adaptive to users’ widening business demands.

[Keywords] H.323-SIP signaling gateway; SIP networks; H.323 networks