A.3,4,6 B.2,3,4 C.2,4,5 D.3,4,5
A.低速話音 B.低速數(shù)據(jù) C.高速數(shù)據(jù)、IPDS數(shù)據(jù) D.低速傳真業(yè)務
A.6GHZ/4GHZ B.6GHZ/1.5GHZ C.1.6GHZ/4GHZ D.406GHZ/1.5GHZ