private branch exchange (PBX)

同义词释义

1)private branch exchange (PBX),专用型交换机2)private branch exchange PBX,专用小型交换机3)pbx,专用交换机4)private automatic exchange(PAX),专用自动小型交换机5)private exchange,private branch exchange,专用交换机，用户交换机6)private exchange,专用交换机;用户交换机