A.消息信號(hào)單元MSU B.鏈路狀態(tài)信號(hào)單元LSSU C.填充信號(hào)單元FISU D.ATM信元
A.業(yè)務(wù)交換點(diǎn)(SSP) B.業(yè)務(wù)控制點(diǎn)(SCP) C.業(yè)務(wù)生成環(huán)境(SCE) D.智能外設(shè)(IP)
A.業(yè)務(wù)交換點(diǎn)(SSP) B.業(yè)務(wù)控制點(diǎn)(SCP) C.業(yè)務(wù)數(shù)據(jù)點(diǎn)(SDP) D.智能外設(shè)(IP)