ITU-T M.21-1992
电信服务中维修学问-维修:维修和维修组织的介绍及一般性原则(第4研究组)8页
Maintenance Philosophy for Telecommunication Services - Maintenance: Introduction and General Principles of Maintenance and Maintenance Organization (Study Group IV) 8 pp
- 标准号
- ITU-T M.21-1992
- 发布日期
- 1992年
- 实施日期
- 废止日期
- 无
- 中国标准分类号
- M01
- 发布单位
- IX-ITU
- 适用范围
- The CCIïT (the International Telegraph and Telephone Consultative Committee) is a permanent organ of the International Telecommunication Union (ITU). CCIïT is responsible for studying technical, operating and tariff questions and issuing Recommendations o