A.CHAP=2,表示Immediate Assignment on TCH, SDCCH Chosen First
B.如果CHAP=2,則在立即支配過(guò)程中永遠(yuǎn)不會(huì)占用SDCCH
C.如何為短消息業(yè)務(wù),不管CHAP設(shè)為1還是2,均不會(huì)立即指配到TCH上
D.CHAP=3,表示Immediate Assignment on TCH, TCH Chosen First, GSM Phase 2 Mobiles, "Channel Needed" Supported