ITU-T M.520-1988
国际集团超群的链接等的日常维护.一般的维修原则.国际传输系统和电话线路维护研究组4

Routine Maintenance on International Group, Supergroup, Etc., Links - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits


 

 

非常抱歉,我们暂时无法提供预览,您可以试试: 免费下载 ITU-T M.520-1988 前三页,或者稍后再访问。

如果您需要购买此标准的全文,请联系:

点击下载后,生成下载文件时间比较长,请耐心等待......

 

标准号
ITU-T M.520-1988
发布日期
1988年
实施日期
废止日期
中国标准分类号
L09
发布单位
IX-ITU
适用范围
Only measurements of the pilot level are made on international group, supergroup,etc.links.These do not involve other stations. Therefore,Administrations are free to decide on the methods and periodicities.In order to ensure that the performance limits of the links laid down in Recommendation M.160 are met,the following tests are recommended for consideration.




Copyright ©2007-2022 ANTPEDIA, All Rights Reserved
京ICP备07018254号 京公网安备1101085018 电信与信息服务业务经营许可证:京ICP证110310号