FAX Commands

Every command in this table must begin with the AT prefix and be executed by pressing ENTER.

Example:AT+FAA=1<ENTER> lets the modem determine whether to answer as a facsimile DCE or as a data modem.

Command Valid Values for n Function
+FAA=n 0, 1, ? Sets adaptive answering.

A service class 1 FAX DCE may have the ability to answer as a data modem DCE or as a FAX DCE. It may also be able to change from class 1 FAX mode to data modem operation in response to an incoming call.

Note: This command controls automatic switching from class 1 to class 0 for call answering only. It does not affect call origination, switching to class 1 from other classes, or switching to classes other than class 0.

0 Answers as a class 1 FAX device only. No switching occurs. This is the default.
1 Automatically determines whether to answer as a facsimile DCE or as a data modem.
? Displays a list of valid +FAA settings.
+FAA?   Displays the current adaptive answering setting.
+FCLASS=n 0, 1, ? Sets the mode of operation.

0 Data mode
1 Group 3 Facsimile Service Class 1 mode
? Displays a list of valid +FCLASS settings.
+FCLASS?   Displays the current FCLASS mode.
+FLO=n 0, 1, 2, ? Sets flow control.

0 Disables flow control.
1 Enables software flow control.
2 Enables hardware flow control.
? Displays a range of valid +FLO settings.
+FLO?   Displays the current flow control mode.
+FMI?   Displays the modem manufacturer identification.
+FMM?   Displays the current product identification.
+FMR?   Displays the modem version code.

The version code consists of the interface type followed by the release date. Interface types are as follows:

Code Interface Type
S Serial
I ISA
P PCMCIA card
U USB
+FPR=n 0, 1, 2, 4, 8, 10, 18 Sets the FAX port rate.

0 Automatic rate detection
1 2400 bps
2 4800 bps
4 9600 bps
8 19200 bps
10 38400 bps
18 57600 bps
+FRH=n 3, 24, 48, 72, 73, 74, 97, 98, 121, 122, 145, 146 Receives data framed in the HDLC protocol using the modulation specified by n.

n Modulation Speed
3 V.21 channel 2. 2400 bps.
24 V.27ter. 2400 bps
48 V.27ter. 4800 bps
72 V.29 7200 bps
73 V.17. 7200 bps
74 V.17 (short train). 7200 bps
96 V.29. 9600 bps
97 V.17. 9600 bps
98 V.17 (short train). 9600 bps
121 V.17. 12000 bps
122 V.17 (short train). 12000 bps
145 V.17. 14400 bps
146 V.17 (short train). 14400 bps

For explanations of messages that appear in response to this command, see Screen Messages.

+FRH=? displays the current FRH value.

+FRM=n 3, 24, 48, 72, 73, 74, 97, 98, 121, 122, 145, 146 Receives data using the modulation specified by n.

n Modulation Speed
3 V.21 channel 2. 2400 bps.
24 V.27ter. 2400 bps
48 V.27ter. 4800 bps
72 V.29 7200 bps
73 V.17. 7200 bps
74 V.17 (short train). 7200 bps
96 V.29. 9600 bps
97 V.17. 9600 bps
98 V.17 (short train). 9600 bps
121 V.17. 12000 bps
122 V.17 (short train). 12000 bps
145 V.17. 14400 bps
146 V.17 (short train). 14400 bps

For explanations of messages that appear in response to this command, see Screen Messages.

+FRM=? displays the current FRM value.

+FRS=n 0–255 Makes the modem wait for the specified duration of silence.

n is the duration, in 10-millisecond intervals, that the modem waits before displaying "OK".

This command terminates with OK when either the specified duration of silence elapses or the user types anything (which is ignored).
+FTH=n 3, 24, 48, 72, 73, 74, 97, 98, 121, 122, 145, 146 Transmits data framed in the HDLC using the modulation specified by n.

n Modulation Speed
3 V.21 channel 2. 2400 bps.
24 V.27ter. 2400 bps
48 V.27ter. 4800 bps
72 V.29 7200 bps
73 V.17. 7200 bps
74 V.17 (short train). 7200 bps
96 V.29. 9600 bps
97 V.17. 9600 bps
98 V.17 (short train). 9600 bps
121 V.17. 12000 bps
122 V.17 (short train). 12000 bps
145 V.17. 14400 bps
146 V.17 (short train). 14400 bps

For explanations of messages that appear in response to this command, see Screen Messages.

+FTH=? displays the current FTH value.

+FTM=n 3, 24, 48, 72, 73, 74, 97, 98, 121, 122, 145, 146 Transmits data using the modulation specified by n.

n Modulation Speed
3 V.21 channel 2. 2400 bps.
24 V.27ter. 2400 bps
48 V.27ter. 4800 bps
72 V.29 7200 bps
73 V.17. 7200 bps
74 V.17 (short train). 7200 bps
96 V.29. 9600 bps
97 V.17. 9600 bps
98 V.17 (short train). 9600 bps
121 V.17. 12000 bps
122 V.17 (short train). 12000 bps
145 V.17. 14400 bps
146 V.17 (short train). 14400 bps

For explanations of messages that appear in response to this command, see Screen Messages.

+FTM=? displays the current FTM value.

+FTS=n 0–255 Pauses the fax transmission.

n is the duration, in 10-millisecond intervals, that the modem waits before displaying "OK".

Screen Messages

Numeric Message Text Message Description
0 OK The previous command has been processed successfully.
1 CONNECT The modem has just connected to another modem.
2 RING Reports the receipt of a network altering ring.
3 NO CARRIER No carrier is being received from the modem.
4 ERROR The previous command line has not been recognised or was completed abnormally.
5 NO DIAL TONE (OPTIONAL) Dial tone was not received within the time-out period.
6 BUSY (OPTIONAL) A busy signal was detected.
64 CONNECT/FAX (OPTIONAL) The modem has established a fax connection. This response is used only when the fax mode is selected