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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 - Network Signaling Performance Requirements for Analog Telephones
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电信.电话终端设备.电、热、机械环境.性能要求
Telecommunications - Telephone Terminal Equipment - Electrical, termal, Mechanical Enviromental - Performance Requirements
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电信.IP电话设备.话音网关传输要求
Telecommunications - IP Telephony Equipment - Voice Gateway Transmission Requirements
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电信.电话终端设备.电话听筒声学性能要求.补充件1
Telecommunications - Telephone Terminal Equipment - Handset Acoustics Performance Requirements - Addendum 1
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电信.电话终端设备.窄带互联网语音协议(VOIP)和基于PCM数字有线电话语音的传输要求
Telecommunications Telephone Terminal Equipment Transmission Requirements for Narrowband Digital Telephones
参考页数：77P.;A4
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电信.电话终端设备.无绳电话的操作和特性.性能要求
Telecommunications - Telephone Terminal Equipment - Cordless Telephone Operation and Feature Performance Requirements
参考页数：22P.;A4
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包括IP电话(VoIP)的多线电话系统(MLTS)的电话式样和基于信息包的设备
Telephony Aspects of MLTS and Packet-based Equipment, including VoIP
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项目25.电话互连接要求和定义(语音服务)修改件1.通用单机呼叫
P25 - Telephone Interconnect Requirements and Definitions (Voice Service) Addendum 1 - Conventional Individual Calls
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电话回路性能特征
Standard Telephone Loop Performance Characteristics
参考页数：37P.;A4
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信息技术.文件处理和有关通信.基于电话业务的用户接口.声音消息交换应用
Information Technology - User Interface to Telephone-based Services: Voice Messaging Application
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