ITU-T M.2110-2002
国际的PDH路径,路段和输电系统的造就成服务M系列:电信管理网和网络维护:国际传输系统,电话电路,电话电路
Bringing-Into-Service of International PDH Paths Sections and Transmission Systems Series M: TMN and Network Maintenance: International Transmission Systems Telephone Circuits Telegraphy Facsimile and Leased Circuits International Transport Network Study