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15–14
The modem accepts the extended fax AT commands to set the modem mode and
fax parameters. Besides the extended fax AT commands, the modem accepts all the
other AT commands described in chapter 9. For instance, you can use ATD to make
a fax call, or ATA to answer an incoming fax call. When using the extended Fax AT
commands, you need to send the command AT+FCLASS=6 first. Following are
the fax-related AT commands:
Mode Settings
#F Sets the modem into V17G3 FAX mode; same function as the ex-
tended AT command AT&N32.
+ #B0 Sets the fax receiving mode. The connection parameters and re-
ceived fax data are sent to the DTE continuously following the con-
nect message. (Default)
#B1 Sets the fax receiving mode. The connection messages are sepa-
rated from the received fax data. The modem sends CONNECT FAX
and ZyXEL first, then it waits for the DC2 character (hex18) to send
the fax data. When the modem receives a DC2 from the DTE, it
starts to send the fax connection parameters
/SnnnnVnTnRnLnCnP<string><CR><LF>
and then the received fax data. In this mode, the modem will wait
for a DC2 at the beginning of every page. The DTE software should
detect the page separator RTC and then sends the DC2 to receive
the next page of fax data. This mode is used with a BBS receiving
faxes.
#B2 This mode is for the polling feature of the modem. In this mode, the
modem will send a polling signal to the remote fax device to ask to
receive a fax from the remote fax device. The received fax data will
be sent to the DTE continuously following the connection message.
#B3 Displays the ring cadence.
Parameter Settings
#V0 Sets to normal vertical resolution.
#V1 Sets to high vertical resolution.
#T0 Sets to the one dimensional coding scheme.
#T1 Sets to the two dimensional coding scheme.
#R0 Sets recording width: 1728 picture elements along a scan line
length of 215mm.
#R1 Sets recording width: 2048 picture elements along a scan line
length of 255mm.
#R2 Sets recording width: 2432 picture elements along a scan line
length of 303mm.