互通[电话]制
intercommunicating system
模拟电话通话
simulate telephone communication
共电电话机
common battary telephone set
telephone set
common battary
市内电话电话号码配换选号
Selection or Change of Telephone Number
集群电话互连
trunked telephone connect
集群电话互连器
trunked telephone connector
PHS个人手持电话通信系统
PHS personal handy-phone system
电话通信系统
Telephone communication system
telephony system
电话通信用户组
TCG Telephone Communication Group