VoIP网络中H.323与SIP的比较与互通研究  

Comparisons and Interworking between H.323 and SIP in VoIP

作　　者：谭洪川[1] 孙建华[1] 

机构地区：[1]中国电子科技集团公司第三十研究所,四川成都610041

出　　处：《通信技术》2012年第8期56-58,61,共4页Communications Technology

摘　　要：在VoIP网络中,H.323协议在SIP协议出现之前就已经得到了广泛使用,因此,要实现H.323协议和SIP协议的互通是当前需要解决的一个重要问题。通过简要介绍这两种协议的体系结构,进一步分析互通过程中需要处理的主要问题,提出了实现H.323与SIP互通的网络结构模型,同时对互通所必须的信令网关进行了初步研究,从而解决了两种协议之间的地址转换与映射、消息转换与映射、媒体能力协商等。经实践证明,该互通方案是可行的。For the wide application of H.323 protocol in VoIP before the advent of SIP protocol,it is now necessary to solve the problem of interworking between H.323 and SIP.By briefly describing the architectures of these two protocols,this paper gives the main problems to be solved in the interworking process of these two protocols,and proposes the network structural model for realizing the interworking of H.323 and SIP.Meanwhile,the preliminary study on the signaling gateway for internetworking these two protocols is also done,thus to solve the addess conversion and mapping,message conversion and mapping,media capability negotiation of these two protocols.Experiment indicates that this interworking scheme is feasible and practicable.

关 键 词：网络电话 会话初始协议 互通 信令网关 

分 类 号：TN915.43[电子电信—通信与信息系统]