ITU-T M.710-1989 General Maintenance Organization for the International Automatic and Semi-Automatic Telephone Service - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits (Study Group IV) 8 pp
To ensure satisfactory service quality in the international automatic and semi-automatic telephone service, it is necessary to have an organization which can use the techniques recommended for achieving this. The organizational elements defined in 8 2 bel
ITU-T M.710-1989 history
1989ITU-T M.710-1989 General Maintenance Organization for the International Automatic and Semi-Automatic Telephone Service - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits (Study Group IV) 8 pp