Fax Command Sets; Class 1 Command Set - ZyXEL Communications 2864 Series User Manual

Fax Command Sets

The 2864 series universal modems support four command sets for the fax function,
the Class 1 command set, the TIA PN-2388 Class 2 command set, the TIA 592
Class 2.0 command set, and the ZyXEL Extended Fax AT command set. The Class
1 protocol uses the modem to transmit the fax data only. The complete organiza-
tional overhead for this protocol is handled by the connected computer. The availa-
ble Class 1 commands are listed first in this chapter. Following this, we will briefly
describe the supported Class 2 commands here. Please refer to the TIA document
for a detailed explanation. The newer TIA standard Class 2.0 commands are also
supported. Interested programmers should consult the TIA document for com-
mand details and consult ZyXEL Technical Support for supported features. The lat-
er sections are related to the ZyXEL Extended Fax AT commands.

Class 1 Command Set

Command
+FCLASS=n
Note: If S57.4=0 (default), the response to the +FCLASS=? command
will not report Class 1 capability. This is due to the fact that some
fax software packages may get confused by this response.
+FTS=n
+FRS=n
+FTM=<MOD>
+FRM=<MOD>
+FTH=<MOD>
+FRH=<MOD>
The <MOD> parameter takes on the following values:
Value Description
Service class selection
n=0 Sets to modem mode
n=1 Sets to Class 1 mode
n=2 Sets to Class 2 mode
n=2.0 Sets to Class 2.0 mode
n=6 Sets to ZFAX mode
n=8 Sets to Voice mode
n=Z Sets to ZyXEL fax parallel port print and/or
DRAM store mode. (See also Class Z AT+F
commands)
0-255 Stops transmission and pauses, in10ms units.
0-255 Waits for silence, in 10ms units.
Transmits data with a <MOD> carrier.
Receives data with a <MOD> carrier.
Transmits HDLC data with a <MOD> carrier.
Receives HDLC data with a <MOD> carrier.
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