文档介绍：: 主叫: 1、 Call Initiation (MS) –>CM Service Request(MS) –>Channel Request(Call Attempt)(MS) 《 RACH 》-> Immediate Assignment(NW) 《 AGCH 》-> Classmark Change (MS) 《 H 》-> GPRS Suspension Request (MS) ->A uthentication Request (NW)-> Authentication Response (MS)-> Ciphering mand (NW)-> Ciphering plete (MS)-> Setup (MS)-> Call Proceeding (NW)-> mand ( NW ) -> plete(MS) -> Call Progress (NW)-> Alerting (Call Setup)(MW)-> Connect ( Call Established )(NW)-> Connect Acknowledge (MS)-> Disconnect (MS)-> Release (Call End)(NW)-> plete (MS)-> Channel Release (NW) 2、 C all Initiation(MS) -> CM Service Request ↑-> Immediate Assignment ↓->Channel Request(Call Attempt) ↑-> Immediate Assignment ↓-> Classmark Change ↑-> GPRS Suspension Request ↑->Authentication Request ↓-> Authentication Response ↑-> Ciphering mand ↓-> Ciphering plete ↑-> Setup ↑-> Call Proceeding ↓-> mand ↓-> plete ↑-> Alerting (Call Setup) ↓-> Connect(Call Established) ↓-> Connect Acknowledge ↑-> Disconnect ↑-> Release(Call End) ↓-> plete ↑-> Channel Release ↓被叫: Channel Request(Call Attempt)-> Immediate Assignment->Paging Response-> Classmark Change-> GPRS Suspension Request -> Authentication Request-> Authentication Response-> Ciphering mand-> Ciphering plete-> Setup -> Call Confirmed-> mand-> plete-> Alerting(Call Setup)-> Connect->Connect Acknowledge(Call Established)->Disconnect-> Release(Call End)-> plete ->Chann