ITU-T T.431-1992 Document Transfer and Manipulation (DTAM) - Services and Protocols - Introduction and General Principles - Terminal Equipment and Protocols for Telematic Services (Study Group VIII) 19 pp
In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized private operating agency.
ITU-T T.431-1992 history
1992ITU-T T.431-1992 Document Transfer and Manipulation (DTAM) - Services and Protocols - Introduction and General Principles - Terminal Equipment and Protocols for Telematic Services (Study Group VIII) 19 pp