B信道电路交换
B channel circuit switched
CDMA时变色散信道
CDMA time-varying dispersive channels
CDMA时变信道
CDMA time-varying channel
D信道链接进接程序
apportionment act [united kingdom
D信道链路访问协议
LAPD:Link Access Procedure D-channel
HFC网上行信道
hybrid fiber-coax up-stream channel