ngn网络中信令互通模块设计

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1、哈尔滨工业大学工程硕士学位论文2.3.6解决引入纠错码后系统延迟的方案.............................................212.5本章小结.................................................................................................24第3章IMS与R4软交换网络互通的分析........................................................253.1IMS与R4软交

2、换网络间成功呼叫的分析.............................................253.2IMS与R4软交换网络间失败呼叫的分析...............................................273.2.1被叫侧回呼叫失败信令信号.........................................................273.2.2被叫侧回呼叫失败通知音信号.....................................................

3、283.2.3通话建立前主叫侧提早释放呼叫.................................................303.2.4通话建立前互通单元主动释放呼叫.............................................313.3协议消息的映射细节以及参数设置.......................................................323.3.1IMS侧发起的呼叫................................................

4、..........................323.3.2R4软交换侧发起的呼叫................................................................343.3.3互通所需的定时器.........................................................................383.4本章小结.......................................................................

5、..........................38第4章信令转换单元的设计实现与结果验证................................................394.1MGCF总体结构.......................................................................................394.2总体模块设计......................................................................

6、...................404.3信令转换单元IWU的设计与实现...........................................................414.3.1SIP消息状态机模块的设计............................................................424.3.2BICC协议状态机设计....................................................................434.3.3互通状态机

7、模块设计.....................................................................444.3.4IWU对SIP消息处理流程................................................................464.3.5IWU对BICC消息处理流程.............................................................494.4设计系统结果验证........................

8、..........................................................524.4.1系统测