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ITU-T R.117 End-to-end error performance for telegraph, telex and gentex connections involving regenerative equipment
ITU-T S.4 Special use of certain characters of the International Telegraph Alphabet No. 2
ITU-T T.102 Syntax-based videotex end-to-end protocols for the circuit mode ISDN
ITU-T S.16 Connection to the telex network of an automatic terminal using a V.24 DCE/DTE interface
ITU-T S.33 Alphabets and presentation characteristics for the intex service
ITU-T T.417 Information technology - Open Document Architecture (ODA) and interchange format: Raster graphics content architectures
ITU-T U.15 Interworking rules for international signalling systems according to recommendations U.1, U.11 and U.12
ITU-T T.418 Information technology - Open Document Architecture (ODA) and interchange format: Geometric graphics content architecture
ITU-T U.75 Automatic called telex answerback check
ITU-T U.61 Detailed requirements to be met in interfacing the international telex network with maritime satellite systems
ITU-T U.203 Technical requirements to be met when providing real-time bothway communications between terminals of the international telex service and data terminal equipments on a PSPDN or via the PSTN
ITU-T M.1020 Characteristics of special quality international leased circuits with special bandwidth conditioning