Organization of the Maintenance of International Telephone-Type Circuits Used for Data Transmission - Data Communication over the Telephone Network (Study Group XVII) 1 pp

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Access Points for International Telephone Circuits - General Maintenance Principles - Maintenance of International Transmission Systems and Telephone Circuits

Maintenance of International Data Transmission Systems - Series M: TMN and Network Maintenance: International Transmission Systems, Telephone Circuits, Telegraphy, Facsimile and Leased Circuits - International Data Transmission

Method to Improve the Management of Operations and Maintenance Processes in the International Telephone Network - Series M: Maintenance: International Transmission Systems, Telephone Circuits, Telegraphy, Facsimile and Leased Circuits; International Public Telephone Network

Maintenance Organization for the Maritime Satellite Service - Maintenance of International Telegraph, Phototelegraph and Leased Circuits - Maintenance of the International Public Telephone Network - Maintenance of Maritime Satellite and Data Transmission Systems (Study Group IV) 3 pp

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Assessment of the Performance of the International Telephone Network - Maintenance of International Telegraph, Phototelegraph and Leased Circuits - Maintenance of the International Public Telephone Network - Maintenance of Maritime Satellite and Data Transmission Systems (Study Group IV) 1 pp

Maintenance: International Transmission Systems, Telephone Circuits, Telegraphy, Facsimile and Leased Circuits. International Public Telephone Network. Recommendation M.1230. Method to Improve the Management of Operations and Maintenance Processes in the International Telephone Network.