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国际电工词汇.第722章:电话学
International Electrotechnical Vocabulary: chapter 722: telephony
参考页数：129P.;A4
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电话环路性能特征
Standard Telephone Loop Performance Characteristics
参考页数：37P.;A4
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模拟和数字电话机、话筒和听筒传输性能测量方法的IEEE标准.修改件1
Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets@ Handsets@ and Headsets Amendment 1
参考页数：33P;A4
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模拟和数字电话机,话筒和听筒传输性能测量的方法
Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets@ Handsets@ and Headsets (Includes Access to Additional Content)
参考页数：173P;A4
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免提电话传输性能的测量方法
Standard Method for Measuring Transmission Performance of Speakerphones
参考页数：101P.;A4
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人机工程.标准电话机键盘数字与字母排列方式
Human Factors (HF) - Assignment of alphabetic letters to digits on standard telephone keypad arrays; English version ETS 300640:1996
参考页数：11P.;A4
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入口和终端(AT).模拟访问公共交换电话网(PSTN).显示(和相关)服务用局部回路的用户线路协议.第1部分:挂机数据传输
Access and terminals (AT) - Analogue access to the Public Switched Telephone Network (PSTN); Subscriber line protocol over the local loop for display (and related) services - Part 1: On-hook data transmission (Endorsement of the English version EN 300659-1 V 1.3.1 (2001-01) as German Standard)
参考页数：1P.;A4
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入口和终端(AT).模拟访问公共交换电话网(PSTN).显示(和相关)服务用局部回路的用户线路协议.第2部分:摘机数据传输
Access and terminals (AT) - Analogue access to the Public Switched Telephone Network (PSTN); Subscriber line protocol over the local loop for display (and related) services - Part 2: Off-hook data transmission (Endorsement of the English version EN 300659-2 V 1.3.1 (2001-01) as German Standard)
参考页数：1P.;A4
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入口和终端(AT).模拟访问公共交换电话网(PSTN).显示(和相关)服务用局部回路的用户线路协议.第3部分:数据链路信息和参数编码
Access and terminals (AT) - Analogue access to the Public Switched Telephone Network (PSTN); Subscriber line protocol over the local loop for display (and related) services - Part 3: Data link message and parameter codings (Endorsement of the English version EN 300659-3 V 1.3.1 (2001-01) as German Standard)
参考页数：1P.;A4
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公共交换电话网(PSTN).PSTN上使用的1200比特/秒双工标准调制解调器的第2类规范
Public Switched Telephone Network (PTSN) - Category II specification for 1200 bits per second duplex modems standardized for use on the PSTN; English version ETS 300116:1996
参考页数：31P.;A4
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