多项选择题
根据以下信令流程,若需得到本次电话占用哪个SDCCH信道的信息,可以查看哪几条信令?()
A.chnav(09:55:19) B.imass C.chnav(09:55:21) D.asscmd
A.HANDOVER PERFORMED B.HANDOVER REQUEST C.HANDOVER COMMAND D.HANDOVER REQUIRED
A.HO REQUEST B.HO REQUIRED C.ASSIGNMENT REQUEST D.HO REQUESTACK