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详细说明: 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 ...展开收缩
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