共电式电话机
common battery telephone
common-battery telephone set
collective-electric telephone
common-battery (telephone) set
共电式交换机
common battery switchboard
磁石落地式电话交换机
floor pattern magneto telephone switchboard
磁石式电话交换机
local battery switchboard
公共电话交换网
public switched telephone network
PSTN Public switched telephone network
PSTN
公共交换电话网
public switched telephone networks
PSTN
公共交换电话网路
public switched telephone network
PSTN
共电电话机
common battary telephone set
telephone set
common battary
共电式话机
Common battery telephone set
人公共电式交换总机
manual common battery switchboard
半自动电话交换机
automanual telephone switchboard
semi-automatic telephone switch board
本地电话交换机
LTE Local Telephone Exchange
便携式磁石电话交换机
portable magneto-telephone switch board