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ITU-T T.121 Generate application...
ITU-T U.102 Intex and similar...
ITU-T P.800 (08/96) Methods for subjective determination of transmission quality
ITU-T I.365.4 B-ISDN ATM adaptation layer sublayers : Service-specific convergence sublayer for HDLC applications
ITU-T I.525 Interworking between networks operating at bit rates less than 64 kbit/s with 64 kbit/s-based ISDN and B-ISDN
ITU-T I.571 Connection of VSAT based private networks to the public ISDN
ITU-T P.930 Principles of a reference impairment system for video
ITU-T V.61 A simultaneous voice plus data modem, operating at a voice plus data signalling rate of 4800 bit/s, with optional automatic switching to data-only signalling rates of up to 14400 bit/s, for use on the General Switched Telephone Network and on leased point-to-point 2-wire telephone type circuits
ITU-T V.56ter Test procedure for evaluation of 2-wire 4 kHz voiceband duplex modems
ITU-T R.21 9600 bit/s modem standardized for use in the telegraph TDM system
ITU-T R.22 Data over voice 19200 bit/s modem standardized for use on telephone network subscriber lines
ITU-T V.76 Generic multiplexer using V.42 LAPM-based procedures
ITU-T V.80 In-band DCE control and synchronous data modes for asynchronous DTE