If you are not sure whether your modem is in Data or Fax mode, use the
command
AT+FCLASS?
.
If the modem
returns a value of
This indicates
0
Data Mode
1
Class 1 Fax Mode
2.0
Class 2.0 Fax Mode.
Whenever the modem is reset using the ATZ command or by turning the
power off and then on, it will reset to Data Mode.
Data and Fax Modes
3-5
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