3Com Courier, Reference

Page: 39 / 204

Data and Fax Modes 4-3
Online-Mode Local
Echo
To configure your modem to display a copy of data that is bein
transmitted on your screen you can use the ATFn command.
Example: Sendin
ATF0
will allow you to see what you are typing in the
display window.
You may see the term duplex used in place of online local echoing,
although the term is not technically accurate.
Data and Fax
Modes
Once you are in Command Mode, you can initialise the modem in Data or
Fax mode.
Fax operations require facsimile-compatible communications software
that can send or receive Group III faxes. Follow the instructions in your fax
software manual.
The modems default operating mode is Data Mode. Most fax software
automatically switches the device to Fax mode when you run the
program, and resets the device to Data mode when you exit the progra
.
Example: Sending
AT+FCLASS=1
, allows you to receive faxes from fax
machines.
As the modem transmits data to a remote system Command
The modem sends a copy of the data to the screen. Online
local echo ON (half duplex).
ATF0
No copy of the data is displayed on screen. Online echo OFF
(full duplex).
ATF1
(default)
If you want the modem prepared to Mode Command
Make calls to and receive calls from other
modems Data Mode
AT+FCLASS=0
Make calls to and receive calls from
analogue facsimile devices, such as fax
modems and fax machines Fax Mode
AT+FCLASS=1
(Class 1 Fax Mode)
or
AT+FCLASS=2.0
(Class 2.0 Fax
Mode)