單項選擇題小區(qū)重選適用于()手機(jī).

A.PHASE1
B.PHASE1&PHASE2
C.PHASE2
D.CLASS5


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4.單項選擇題關(guān)于CHAP的設(shè)置,下面說法正確的是()

A.CHAP=2,表示Immediate Assignment on TCH, SDCCH Chosen First 
B.如果CHAP=2,則在立即支配過程中永遠(yuǎn)不會占用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

5.單項選擇題關(guān)于DIRECTED RETRY和FORCE DIRECTEDRETRY,哪種說法是正確的()

A.DIRECTED RETRY只能在TCH之間進(jìn)行切換 
B.FORCE DIRECTED RETRY不需考慮鄰小區(qū)電平 
C.DIRECTED RETRY在某些情況下能夠縮短手機(jī)建立呼叫的時間 
D.FORCE DIRECTED RETRY不能在微蜂窩中進(jìn)行