主被叫手机流程 移动主叫流程

OPP

第7 章 移动主叫流程.............................................................................................................7-1
7.1 概述.................................................................................................................................. 7-1
7.2 正常流程............................................................................................................................ 7-1
7.2.1 Mobile originating call establishment without OACSU (early assignment) ............. 7-2
7.2.2 Mobile originating call establishment with OACSU (late assignment) .................... 7-5
7.2.3 Mobile originating call establishment with OACSU (Very early assignment).......... 7-6
7.3 异常流程............................................................................................................................ 7-7
7.3.1 随即接入立即指配异常流程................................................................................. 7-7
7.3.2 MSC 未下发Assignment request 而是直接下发Disconnect 拆除呼叫.................. 7-8
7.3.3 指配异常流程.......................................................................................................... 7-8
7.3.4 掉话造成的异常流程............................................................................................... 7-9
7.3.5 用户挂机造成的异常流程........................................................................................ 7-9
7.3.6 MSC 清除造成的异常流程....................................................................................... 7-9