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公共交换电话网上使用的频移键控调制解调器
A Frequency Shift Keyed Modem for Use on the Public Switched Telephone Network
参考页数：12P.;A4
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带环路信令的电话设备
Telephone Instruments with Loop Signaling
参考页数：
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声学测量
Acoustic Measurement
参考页数：
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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 - Alerter Acoustic Output Performance Requirements for Analog Telephones
参考页数：
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模拟用户和数字连接服务器调制解调器评定用北美电话网络传输模型
North American Telephone Network Transmission Model for Evaluating Analog Client and Digitally Connected Server Modems
参考页数：
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话音频带用专用小交换机交换设备
Private Branch Exchange (PBX) Switching Equipment for Voiceband Application
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电信.电话终端设备.通过IP的窄带语音和通过PCM数字有线电话语音的传输要求
Telecommunications - Telephone Terminal Equipment - Transmission Requirements for Narrowband Voice Over IP (VOIP) and Voice Over PCM Digital Wireline Telephones
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与助听器兼容的电话的磁场强度标准
Magnetic Field Intensity Criteria for Telephone Compatibility with Hearing Aids
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远程通信电话终端设备.声音输出设备的射频抗扰要求
Telecommunications Telephone Terminal Equipment - Radio Frequency Immunity Requirements for Equipment Having an Acoustic Output
参考页数：
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电话互连接要求和定义(语音服务)
Telephone Interconnect Requirements and Definitions (Voice Service)
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