CCITT (Comité Consultatif International Téléphonique et Télégraphique)
standard for up to 14,400BPS (Bits Per Second)
full duplex modems. It allows both modems to talk simultaneously requiring costly
echo cancelling circuits. Any two V.32 bis modems, even if they were made by
different manufacturers, can talk to each other. V.32 bis modems can also talk to the
older 9600 baud V.32 modems. The V.32 bis standard covers modulation. A V.32 bis
modem will also have V.42 error correction and V.42bis compression.