- multichannel telephone system
- 多路电话 multiplex telephony
- 系统 system
- 闭路电话系统 closed circuit telephone system
- 调频多路电话 frequency modulated multi channel telephony
- 多路电话业务 multi access telephone service; multiaccess telephone service
- 等电话系统 dispatch telephone system
- 电话系统 telephone systems
- 多路电话计费系统技术要求及测试方法 technical specifications and test methods of multi-port telephone accounting system
- 按键电话系统 key telephone system (kts); kts key telephone system
- 保密电话系统 voice security telephone system
- 本地电话系统 lts local telephone system
- 电视电话系统 television telephone system; video telephone system
- 调度电话系统 dispatcher telephone system; dispatching telephone system
- 对讲电话系统 intercom system; intercommunicating telephone system; intercommunication system; interphone system; talk-back system
- 蜂窝电话系统 cellular telephony system
- 公用电话系统 public telephone system
- 国内电话系统 national telephone system
- 会议电话系统 conference telephone system; conferencetelephonesystem
- 机内电话系统 aircraft interphone system
- 键选电话系统 [讯] key telephone system
- 紧急电话系统 emergency telephone system
- 可视电话系统 video-phone system
- 老式电话系统 plain old telephone service (pots)
- 列车电话系统 train telephone system
- 逻辑电话系统 logic telephone system
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