目录
1.注册流程: ..........................................................................................3
2.注销流程: ..........................................................................................4
3. 基本呼叫建立过程: ........................................................................5
4. 会话更改流程: ................................................................................7
5. 正常呼叫释放过程: ........................................................................8
6. 被叫忙呼叫释放: ............................................................................9
7.被叫无应答流程一: ........................................................................10
8.被叫无应答流程二: ........................................................................11
9.遇忙呼叫前转: ................................................................................12
10.无应答呼叫前转流程: ..................................................................13
11.呼叫保持:.......................................................................................14
12.呼叫等等: ......................................................................................15