The CCITï (the International Telegraph and Telephone Consultative Committee) is a permanent organ of the International Telecommunication Union (ITü). CCIïT is esponsible for studying technical, operating and tariff questions and issuing Recommendations on
ITU-T M.20-1992 history
1992ITU-T M.20-1992 Maintenance Philosophy for Telecommunication Networks - Maintenance: Introduction and General Principles (Study Group IV) 24 pp