自动交换机
automatic switchboard
automatic exchange
automatic telephone switchboard
automatic switching unit
电子自动交换机
electronic automatic exchange
air start valve
electronic anutomatic exchange
EAX
专用自动交换机
private automatic exchange
buckling modal
dial private branch exchange
PABX
农村自动交换机
RAX Rural Automatic Exchange
用户自动交换机
Private Automatic Branch Exchange， PABX
private automatic branch exchange
PABX
面板型自动交换机
panel type automatic switchboard
电子复式自动交换机
electronic multiple automatic exchange
程控数字自动交换机
PABX:PrivateAuntomaticBranchExchange
私用自动交换机
private automatic exchange
battered post
Pax
实验电子控制自动交换机
experimental electronic controlled automatic switch board
农村电子自动交换机
REAX Rural Electronic Automatic Exchange
长途电话自动交换机
automatic toll switching system
用户专用自动交换机
private automatic branch exchange