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ITU-T E.109 International billed...
ITU-T T.105 Syntax-based videotex...
ITU-T T.82 Corrigendum 1 T.82 (1993) Technical Cor. 1
ITU-T Q.512 Digital exchange interfaces for subscriber access
ITU-T F.910 Procedures for designing, evaluating and selecting symbols, pictograms and icons
ITU-T F.902 Interactive services - Design guidelines
ITU-T Q.1400 ADD 1 Architecture framework for the development of signalling and OAM protocols using OSI concepts
ITU-T Q.2957.1 Stage 3 description for additional information transfer supplementary services using B-ISDN digital subscriber signalling system No. 2 (DSS2) - Basic call : User-to-user signalling (UUS)
ITU-T F.851 Universal Personal Telecommunication (UPT) - Service description (Service set 1)
ITU-T F.115 Service objectives and principles for future public land mobile telecommunication systems
ITU-T F.813 Virtual path service for reserved and permanent communications
ITU-T Q.2120 B-ISDN meta-signalling protocol
ITU-T Q.85.6 Stage 2 description for community of interest supplementary services : Global Virtual Network Service (GVNS)