A.Inter BSC切換:handover commandB.Intra BSC切換:handover requestackC.Intra BSC切換:handover commandD.Inter BSC切換:handover request
A.Paging Request Type 1B.Paging Request Type 2C.Paging Request Type 3
A.GPRS移動性管理B.數(shù)據(jù)壓縮C.計費D.傳輸錯誤診斷和重發(fā)功能