ITU-T G.221 SPANISH-1993
载波传输系统相关的总推荐性规范
OVERALL RECOMMENDATIONS RELATING TO CARRIER-TRANSMISSION SYSTEMS
- 标准号
- ITU-T G.221 SPANISH-1993
- 发布日期
- 1993年01月01日
- 实施日期
- 废止日期
- 无
- 中国标准分类号
- M31
- 发布单位
- IX-ITU
- 引用标准
- ITU-T G.134 ITU-T G.151 ITU-T J.18
- 适用范围
- The characteristics of complete circuits, measured between audio-frequency terminals (overall loss in terminal service and in transit service, frequency bands effectively transmitted and attenuation distortion, variation of overall loss with time, phase distortion, stability, crosstalk, etc.) should meet the general conditions for 4-wire telephone circuits indicated in Section 1 of the Series G Recommendations.