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N-ISDN 第二类网络终端(NT2 型)设备ISDN 用户交换机技术规范
Technical specification for ISDN PABXs
参考页数:22P.;A4
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投币电话机技术条件
The specifications for coin box telephone set
参考页数:15P.;A4
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室内电话机插头座
Jack and Plug For Indoor Telephone
参考页数:11P.;A4
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自动用户交换机进网要求
Requirements for PABXs access to public telephone switching network
参考页数:38P.;A4
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手柄电话助听器耦合技术要求和测量方法
The Requirements of Hearing Aids Compatibility and Measurement Methods for Telephone Handset
参考页数:15P.;A4
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进出口信息技术设备检验规程 第7部分:有线电话机
参考页数:9P;A4
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程控电话交换机电源通用规范
General specification for power supply system of SPC exchange
参考页数:20P.;A4
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长途人工电话交换设备.测试方法
Methods of test for toll manual telephone switching equipment
参考页数:19P.;A4
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长途人工电话交换设备.技术要求
Technical requirements for toll manual switching equipment
参考页数:21P.;A4
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话带调制解调器测试方法
Methods of test for voice band modems
参考页数:9P.;A4
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