ITU-T Data Modem Standards

ITU V.22bis

The algorithm implemented is the ITU-T V.22bis modem recommendation transmitting data at rates of up to 2 400 bps. It is a Full-Duplex, Quadrature Amplitude Modulated (QAM) modem and includes fallback to V.22 standard.

V.22 and V.22bis both operate at 600 symbols per second, on carrier frequencies of 2,400 Hz and 1,200 Hz, for respective high and low channels. An optional guard tone may also be applied to the high channel.

This product has been developed and shipped by SIGNALS+SOFTWARE on a number of platforms previously, both standalone and as part of a complete solution, and would be available customized to meet specific requirements.

For more information please contact our sales team.

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