VoIP网络中SIP和H.323协议互通的研究与实现  

Research and implementation between SIP and H.323 protocol in VoIP network

作　　者：张秋余[1] 余建明[1] 华竹平[1] 王晶[1] 

机构地区：[1]兰州理工大学计算机与通信学院,甘肃兰州730050

出　　处：《计算机工程与设计》2007年第16期3843-3845,3956,共4页Computer Engineering and Design

基　　金：甘肃省科技攻关基金项目(2GS047-A52-002-03)

摘　　要：在SIP网络出现之前,以IP网络为传输系统的H.323网络已得到广泛应用,因此,必须考虑SIP网络和H.323网络的互联问题。通过分析两个协议互通过程中需要解决的地址解析和映射、消息映射、媒体能力协商等问题,并深入研究它们的状态图,然后分别以SIP向H.323终端发起呼叫以及H.323向SIP终端发起呼叫为模型,模拟两协议的互通实现,经实践证明此方案是合理可行的。Before the SIP network appeared, the H. 323 networks which transmitted by IP network system has been widely applied. Therefore, must take into the interworking between SIP networks and the H. 323 network, Through analysis the problem such as address resolving and mapping, information mapping, the negotiation of media capability which are produced in the process of the two protocol interworking, and in-depth study of their state diagram, then, respectively launched a call model by SIP to H.323 terminals and H. 323 to SIP terminals, simulating the interworking of two protocol, which proved this scheme is reasonable and practicable. 　

关 键 词：会话初始协议 基于分组交换的多媒体通信系统 网络电话 互通功能体 终端 

分 类 号：TN915[电子电信—通信与信息系统]