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公用电话网数字排队机技术要求及测试方法
Technical requirment and test method for digital queue equipment of PSTN
参考页数:29P.;A4
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接入电话网的电话机和其他设备上用于发号的数字、字母和符号
Arrangement of digits,letters and symbols on telephones and other devices that can be used for gaining access to a telephone network
参考页数:9P.;A4
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免提电话机技术要求和测试方法
Technical Requirements and Measuring Methods of Hands-Free Telephone Sets
参考页数:17P.;A4
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公用电话网局用数字电话交换设备进网检测方法
Test method for networking of digital office telephone exchange equipment in public telephone network
参考页数:115P.;A4
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录音电话机技术要求及测试方法
Technical requirements and measuring methods of telegraphone
参考页数:16P.;A4
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总配线架
Main distribution frame
参考页数:29P.;A4
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电话机型号命名方法
Type designation system for telephone sets
参考页数:2P.;A4
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电话交换附属设备型号命名方法
Type designation for accessory equipments of telephone exchange
参考页数:3P.;A4
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电话交换机型号命名方法
Type designation system for telephone switchboards
参考页数:2P.;A4
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通信设备过电压保护用半导体管
Semiconductor arrester for The over-voltage protection of telecommunications installations
参考页数:14P.;A4
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