In order to furnish guiding principles to Administrations, the CCITT recommends the following principles for the general maintenance organization for international circuits.
ITU-T M.70 FRENCH-1988 Referenced Document
ITU-T M.1012 Circuit Control Station for Leased and Special Circuits - Maintenance of International Telegraph, Phototelegraph and Leased Circuits - Maintenance of the International Public Telephone Network - Maintenance of Maritime Satellite and Data Transmission Sys*， 1989-01-01 Update
ITU-T M.1013 Sub-Control Station for Leased and Special Circuits - Maintenance of International Telegraph, Phototelegraph and Leased Circuits - Maintenance of the International Public Telephone Network - Maintenance of Maritime Satellite and Data Transmission Systems*， 1989-01-01 Update
ITU-T M.1014 Transmission Maintenance Point (International Line) (TMP-IL) - Maintenance of International Telegraph, Phototelegraph and Leased Circuits - Maintenance of the International Public Telephone Network - Maintenance of Maritime Satellite and Data Transmissio*， 1989-01-01 Update
ITU-T N.5 SOUND-PROGRAMME CONTROL SUB-CONTROL AND SEND REFERENCE STATIONS
ITU-T N.55 Organization Responsibilities and Functions of Control and Subcontrol International Television Centres and Control and Subcontrol Stations for International Television Connections Links Circuits and Circuits Sections Maintenance of International Sound-Pro*， 1993-01-01 Update
ITU-T M.70 FRENCH-1988 history
1988ITU-T M.70 FRENCH-1988 GUIDING PRINCIPLES ON THE GENERAL MAINTENANCE ORGANIZATION FOR TELEPHONE - TYPE INTERNATIONAL CIRCUITS