A.業(yè)務(wù)管理層 B.網(wǎng)絡(luò)控制層 C.邊緣接入層 D.核心交換層
A.該客戶(hù)在本地只能撥打市話短號(hào) B.該客戶(hù)在本地只能撥打省內(nèi)短號(hào) C.該客戶(hù)在本地不能撥打市話及省內(nèi)短號(hào) D.該客戶(hù)在本地能撥打市話及省內(nèi)短號(hào)
A.Global System for Mobile communications B.Global Standard for Mobile cellular C.General Standard for Mobile cellular D.General System for Mobile communications