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ITU-T R.118 Performance and availability monitoring in regenerative TDM
ITU-T S.8 Intercontinental standardization of the modulation rate of start-stop apparatus and of the use of combination No. 4 in figure-shift
ITU-T S.20 Automatic clearing procedure for a telex terminal
ITU-T S.21 Use of display screens in telex machines
ITU-T S.22 Conversation impossible' and or pre-recorded message in response to J/BELL signals from a telex terminal
ITU-T S.23 Automatic request of the answerback of the terminal of the calling party, by the telex terminal of the called party or by the international network
ITU-T S.35 Answerback coding for the Intex service
ITU-T U.7 Numbering schemes for automatic switching networks
ITU-T U.10 Equipment of an international telex position
ITU-T U.62 General requirements to be met in interfacing the international telex network with the fully automated maritime VHF/UHF radio system
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