U-SYS SoftX3000 软交换系统 技术手册 信令与协议分册
目 录
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目 录
第 1 章 MGCP 协议 ..................................................................................................................1-1
1.1 概述....................................................................................................................................1-1
1.1.1 基本概念..................................................................................................................1-1
1.1.2 相关术语..................................................................................................................1-1
1.1.3 协议栈结构 ..............................................................................................................1-7
1.1.4 MGCP 协议的应用...................................................................................................1-7
1.2 协议消息 ............................................................................................................................1-8
1.2.1 消息类型..................................................................................................................1-8
1.2.2 消息结构................................................................................................................1-11
1.3 基本控制流程 ...................................................................................................................1-21
1.3.1 网关注册流程.........................................................................................................1-21
1.3.2 成功的终端呼叫流程(在同一 MG 下).................................................................1-22
1.3.3 成功的终端呼叫流程(在不同 MG 下).................................................................1-33