> 12.1 | FAX parameters

> This section describes the parameter <mod> used by some of the fax-specific AT commands. To find out the value(s) actually supported by the <mod> parameter use the test commands either in on-hook or off-hook mode.
> Parameter Description

> <mod>(num)

> Modulation scheme
> 3
> V21 Ch2 - 300 bps
> 24
> V.27ter - 2400 bps
> 48
> V.27ter - 4800 bps
> 72
> V.29 - 7200 bps
> 96
> V.29 - 9600 bps
> Note

> • | For AT+FRH and AT+FTH, parameter <mod> can take value 3 only, while AT+FRM and AT+FTM never support <mod>=3.