华为技术文档 软交换分组协议基础－SIP 华为42页官方文档...

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华为技术文档  软交换分组协议基础－SIP  华为42页官方文档详解SIP技术


目录
第1章 SIP协议总体概述............................................................................................................1
1.1 SIP协议定义..........................................................................................................................1
1.2 SIP协议支持多媒体通信的五个方面......................................................................................1
1.3 SIP协议优点..........................................................................................................................2
第2章 SIP协议主要概念模型....................................................................................................3
2.1 实体模型概述........................................................................................................................3
2.2 相关概念................................................................................................................................4
第3章 SIP协议主要消息............................................................................................................6
3.1 SIP消息分类..........................................................................................................................6
3.2 SIP消息结构..........................................................................................................................6
3.3 消息格式................................................................................................................................6
3.3.1 请求消息格式..............................................................................................................6
3.3.2 响应消息格式..............................................................................................................8
第4章 SIP协议主要响应码......................................................................................................11
4.1 响应码分类..........................................................................................................................11
4.2 1xx类消息............................................................................................................................11
4.3 2xx类消息............................................................................................................................12
4.4 3xx类消息............................................................................................................................12
4.5 4xx类消息............................................................................................................................12
4.6 5xx类消息............................................................................................................................14
4.7 6xx类消息............................................................................................................................15
第5章 SIP协议主要流程..........................................................................................................16
5.1 呼叫模型概述......................................................................................................................16
5.2 基本呼叫建立流程...............................................................................................................17
5.3 基本呼叫拆除流程...............................................................................................................18
5.4 经过代理的呼叫建立流程....................................................................................................19
5.5 经过代理的呼叫拆除流程....................................................................................................20
第6章 SIP协议在软交换SoftX3000的实际应用举例...............................................................22
6.1 SIP用户局内互通组网说明..................................................................................................22
6.2 SIP协议在软交换SoftX3000流程图....................................................................................22
6.3 对应主要消息说明...............................................................................................................24
6.3.1 INVITE......................................................................................................................24
6.3.2 100 TRYING.............................................................................................................26
6.3.3 407 Proxy Authentication.........................................................................................27
6.3.4 ACK..........................................................................................................................28
6.3.5 INVITE......................................................................................................................29
6.3.6 100 TRYING.............................................................................................................31
6.3.7 INVITE......................................................................................................................32
6.3.8 180 RINGING...........................................................................................................34
6.3.9 200 OK.....................................................................................................................35
6.3.10 ACK........................................................................................................................36
6.3.11 OPTION..................................................................................................................37
6.3.12 BYE........................................................................................................................38








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