private switched telephone network
PSTN Public switched telephone network
public switched telephone network
电话公网
电话网
公用电话网络
公用电话网
公共电话交换网
公用交换电话网
固定电话网络
公共交换电话网路
公用交换电话网络
public switched telephone network {= PSTN}
switched telephone network
exchange for telephone general office
General Network Management
General Network Management Data Collection Frame
general telephone system
GT&ET General Telephone and Electronics International
network general examination system
NGCP Network General Control Protocol
bilinear switched network
circuit switched network
circuit-switched network
loop back testlocal packet switched network
LPCVDlocal packet switched network
LPN Local Packet switched Network