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ITU-T F.63 Additional facilities in the international telex service
ITU-T F.850 Principles of Universal Personal Telecommunication (UPT)
ITU-T F.901 Usability evaluation of telecommunication services
ITU-T G.963 Access digital section for ISDN primary rate at 1544 kbit/s
ITU-T I.114 Vocabulary of terms for universal personal telecommunication
ITU-T I.122 Framework for frame mode bearer services
ITU-T I.354 Network performance objectives for packet-mode communication in an ISDN
ITU-T V.13 Simulated carrier control
ITU-T X.218 Reliable transfer: model and service definition
ITU-T X.220 Use of X.200-series protocols in CCITT applications
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