ITU-T G.174 FRENCH-1994
使用便携式终端接入公用交换电话网(PSTN)的地面数字无线系统的传输性能目标.国际电话连接和国际电话电路的一般特征(12号研究组)17pp

Transmission Performance Objectives for Terrestrial Digital Wireless Systems Using Portable Terminals to Access the PSTN - General Characteristics of International Telephone Connections and International Telephone Circuits (Study Group 12) 17 pp

ITU-T G.174 FRENCH-1994 发布历史

This Recommendation provides transmission performance objectives for terrestrial digital wireless systems that use portable terminals to access the PSTN (or the PSTN network interface).While satellite access to a base station is not within the scope of this Recommendation, interconnection with the PSTN, which may involve satellite access, or a satellite link within the PSTN, is not excluded. In this Recommendation, these portable terminals are generically referred to as wireless personal communication systems; however, there is no intent that the objectives herein necessarily apply to any specific wireless personal communication system. The objectives provided here have been derived with the explicit assumption that the switching and transmission systems used in the PSTN, above and including the local exchanges, are digital, with subscriber lines being either analogue or digital. This assumption allows for more pertinent guidance for the time frame in which these future wireless systems are expected to be deployed. Such wireless systems are not expected to introduce, during stable operation, any significant transmission quality degradation relative to PSTN links covered by the G.100-Series of Recommendations.Currently, Recommendation G.173 exists for established mobile technologies that may not comply with this Recommendation for economic reasons.

ITU-T G.174 FRENCH-1994由国际电信联盟 IX-ITU 发布于 1994-06-01。

ITU-T G.174 FRENCH-1994 在中国标准分类中归属于: M11 通信网技术体制,M16 信息传输指标。

ITU-T G.174 FRENCH-1994 发布之时，引用了标准

• ITU-T E.430 服务质量框架(研究2组)6pp
• ITU-T E.800 有关服务质量和网路性能的术语和定义(包括可靠性)*， 2008-09-01 更新
• ITU-T G.113 语音处理导致的传输故障.学习研讨会12*， 2022-07-23 更新
• ITU-T G.114 单向传播时间 G系列:传输系统和媒介,数字系统和网络 国际电话连接和电路 整个国际电话连接传输质量的一般建议*， 2003-05-01 更新
• ITU-T G.131 发话回声以及其控制 G系列:传输系统和媒介,数字系统和网络 国际电话连接和电路 国际电路和国内扩展电路*， 2022-07-23 更新
• ITU-T G.165 回声消除器 国际电话连接和国际电话电路的一般特性(研究12和15组)24pp
• ITU-T G.173 数字公用陆地移动网络传输系统和媒介的语音服务的传输规划方面 使用国际电话连接网络的特殊电路和连接的传输系统
• ITU-T G.711 语音频率的脉冲编码调制(PCM)
• ITU-T G.712 脉冲编码调制信道的传输性能特性*， 2022-07-23 更新
• ITU-T G.726 40、32、24、16kbit/s自适应差分脉冲编码调制(ADPCM)
• ITU-T G.728 使用比特率为16 Kb/s低延时代码激励线性预测的语音编码.16号研究组*， 2012-06-01 更新
• ITU-T P.79 电话机响度评定值(LRs)的计算*， 2022-07-23 更新

* 在 ITU-T G.174 FRENCH-1994 发布之后有更新，请注意新发布标准的变化。

ITU-T G.174 FRENCH-1994的历代版本如下：

• 1994年06月01日 ITU-T G.174 FRENCH-1994 使用便携式终端接入公用交换电话网(PSTN)的地面数字无线系统的传输性能目标.国际电话连接和国际电话电路的一般特征(12号研究组)17pp

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标准号

ITU-T G.174 FRENCH-1994

发布日期

1994年06月01日

实施日期

废止日期

无

中国标准分类号

M11;M16

发布单位

IX-ITU

引用标准

ITU-T E.430 ITU-T E.800 ITU-T G.113 ITU-T G.114 ITU-T G.131 ITU-T G.165 ITU-T G.173 ITU-T G.711 ITU-T G.712 ITU-T G.726 ITU-T G.728 ITU-T P.31 ITU-T P.79 ITU-T Q.2001

适用范围

This Recommendation provides transmission performance objectives for terrestrial digital wireless systems that use portable terminals to access the PSTN (or the PSTN network interface).While satellite access to a base station is not within the scope of this Recommendation, interconnection with the PSTN, which may involve satellite access, or a satellite link within the PSTN, is not excluded. In this Recommendation, these portable terminals are generically referred to as wireless personal communication systems; however, there is no intent that the objectives herein necessarily apply to any specific wireless personal communication system. The objectives provided here have been derived with the explicit assumption that the switching and transmission systems used in the PSTN, above and including the local exchanges, are digital, with subscriber lines being either analogue or digital. This assumption allows for more pertinent guidance for the time frame in which these future wireless systems are expected to be deployed. Such wireless systems are not expected to introduce, during stable operation, any significant transmission quality degradation relative to PSTN links covered by the G.100-Series of Recommendations.Currently, Recommendation G.173 exists for established mobile technologies that may not comply with this Recommendation for economic reasons.