程控交换机
program-controlled switchboard
programme controlled exchange
SPC digital exchange
program controled exchange
program control switching
SPC exchange
SPC
Exchange
program control switch
digital program controlled exchange
digital exchanger
PBX
digital exechange
program-controlled switch
program control exchanger
program-controlled exchange
exchanger
PABX
PCS
stored program controlled exchange
programmable exchange
private branch exchange
program controlled switch
time-sharing control
numerical control switcher
private automatic branch exchange
Program controlled exchange
program controlled switchboard
SPC exchanges
program-controlled converter
程控交换机电路
Programmable switchboard circuit
程控交换机房
stored-program control SPC exchange center
数字程控交换机
digital program-controlled exchanger
digital telephone switching
digital program control exchange
digital programmer switcher
digital SPC exchange
Digital SPC Switch
程控交换
program control exchange
SPC exchange
programmed control switching
program control switching
programmed automatic exchange
SPC switching
stored program control switching
Stored program switching
programmed switch
program control exchanges
stored progrom control exchange
stored program control exchange
switching of program control
program controlled switch
program-controlled exchange
Program controlled exchange
program-controlled switching
程控交换台
program-controlled telephone switchboard
电话程控交换
Telecommunication switching
公路工程交换程序
heep
highway engineering exchang program
数字程控交换
digital program control switching
digital program-con-trolled exchange
digital SPC switching
digital program control exchange