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ITU-T R.56 Telegraph distortion limits to be quoted in recommendations for equipment and transmission plans
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.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 X.53 Numbering of channels on international multiplex links at 64 kbit/s
ITU-T U.62 General requirements to be met in interfacing the international telex network with the fully automated maritime VHF/UHF radio system