Telecommunications - telephone terminal equipment - network signaling performance requirements for analog telephones 电信.电话终端设备.模拟电话的网络发送信号性能要求
Telecommunications - telephone terminal equipment - alerter acoustic output performance requirements for analog telephones 电信.电话终端设备.模拟电话用报警器声输出性能要求
Telecommunications telephone terminal equipment - radio frequency immunity requirements for equipment having an acoustic output 远程通信电话终端设备.声音输出设备的射频抗扰性要求
Specification for 12 - channel telephone carrier terminal equipment used on the symmetric pains of 2 . 6 9 . 5mm coaxial cable 2 . 6 9 . 5mm综合中同轴电缆高频四芯组或高频线对12路载波电话终端设备技术条件