In this Recommendation, the expression "Administration" is used for conciseness to indicate both a telecommunication administration and a recognized operating agency.
ITU-T T.81 AMD 1-2004 history
2004ITU-T T.81 AMD 1-2004 (Pre-Published) Non-normative Amendment 1 Patent Information Update Annex L Patents Amendment 1: SERIES T: TERMINALS FOR TELEMATIC SERVICES