3-4CHAPTER 3: MODES OF OPERATION

Data and Fax

Once you are in Command Mode, you can initialize the modem in Data

Modes

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 program

 

.

 

 

 

 

 

 

 

If you want the modem prepared to

Mode

Command

 

 

 

 

 

Make calls to and receive calls from other

Data Mode

AT+FCLASS=0

 

modems

 

 

 

 

 

 

 

Make calls to and receive calls from analog

Fax Mode

AT+FCLASS=1

 

facsimile devices, such as fax modems and

 

(Class 1 Fax Mode)

 

fax machines

 

or

 

 

 

AT+FCLASS=2.0

(Class 2.0 Fax

Mode)

Example: Sending AT+FCLASS=1, allows you to receive faxes from fax machines.

Class 1 and Class 2.0 Fax Modes refer to standards set by the Electronic

Industries Association/Telecommunications Industry Association. Class 1

Fax Mode is the minimal standard for computer-faxmodem interface.

Class 2.0 Fax Mode refers to the extended computer-faxmodem interface.

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3Com 56K Data and Fax, Modes, Or Fax mode, Software manual