TIA TSB-147-2004
电信-多线终端系统-PBX交换设备要求在标准TIA-464-C 及ETSI ES 201 168 Version 1.1中 1.1版

Telecommunications Multiline Terminal Systems Comparison of PBX Transmission Requirements in Standards TIA-464-C and ETSI ES 201 168 Version 1.2.1

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标准号

TIA TSB-147-2004

发布日期

2004年06月01日

实施日期

废止日期

无

中国标准分类号

M00

国际标准分类号

49.040

发布单位

US-TIA

适用范围

Over the last decade, continuing telecommunications improvements have brought the continents closer together – digital signaling allows calls to be established in less than a second and digital transmission has improved voice quality. Such changes have made it convenient to call anywhere in the world without a thought being given to past difficulties in completing such calls with acceptable transmission quality.

TIA TSB-147-2004 中可能用到的仪器设备