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ITU-T T.351 Imaging process of character information on facsimile apparatus
ITU-T Q.8 Signalling systems to be used for international manual and automatic working on analogue leased circuits
ITU-T G.755 Digital multiplex equipment operating at 139264 kbit/s and multiplexing three tributaries at 44736 kbit/s
ITU-T Q.110 General aspects of the utilization of standardized CCITT signalling systems on PCM links
ITU-T J.18 Crosstalk in sound-programme circuits set up on carrier systems
ITU-T R.58bis Limits on signal transfer delay for telegraph, telex and gentex networks
ITU-T U.74 Extraction of telex selection information from a calling telex answerback