资料编码产品名称NGN使用对象工程师产品版本编写部门固网技术支持部资料版本V1.1软交换分组协议基础－SIP拟制：刘伟聪日期：20021211审核：日期：审核：日期：批准：日期：华为技术有限公司版权所有侵权必究修订记录日期修订版本描述作者20020716V1.0刘伟聪20020917V1.1调整文档刘伟聪20021211V1.1转换为WORD格式刘伟聪目录第1章SIP协议总体概述............................................................................................................11.1SIP协议定义........................................................................................................................11.2SIP协议支持多媒体通信的五个方面.....................................................................................11.3SIP协议优点........................................................................................................................2第2章SIP协议主要概念模型.....................................................................................................32.1实体模型概述........................................................................................................................32.2相关概念...............................................................................................................................4第3章SIP协议主要消息............................................................................................................63.1SIP消息分类........................................................................................................................63.2SIP消息结构........................................................................................................................63.3消息格式...............................................................................................................................63.3.1请求消息格式.............................................................................................................63.3.2响应消息格式.............................................................................................................8第4章SIP协议主要响应码.......................................................................................................114.1响应码分类.........................................................................................................................114.21xx类消息..........................................................................................................................114.32xx类消息..........................................................................................................................124.43xx类消息..........................................................................................................................124.54xx类消息..........................................................................................................................124.65xx类消息..........................................................................................................................144.76xx类消息..........................................................................................................................15第5章SIP协议主要流程..........................................................................................................165.1呼叫模型概述...................................................................................................
