Fax Operation

Class 1 Result Code +FCERROR

If the modem detects any carrier or tone that differs from that specified in a +FRM or +FRH command, it sends the +FCERROR result code and returns to command state, allowing the DTE to attempt a recovery. The numeric form of this response is +F4.

Fax Autoanswer +FAA=

The modem can be set up to automatically detect if a fax or data call is being answered. The command +FAA=1 enables this function and +FAA=0 disables it. This feature requires special support by the fax software package.

Command

Description

 

 

+FAA=0

Disable fax autoanswer

 

 

+FAA=1

Enable fax autoanswer

 

 

DTE Autobaud for Fax Autoanswer *FR

Set the fax autoanswer feature to autobaud at 19.2 kbps or greater, if desired.

Command

Description

 

 

*FR

Forced to > = 19,200 bps

 

 

*FR1

Forced to = 19,200 bps

 

 

*FR?

Display this option’s current status

 

 

Binary File Transfer

Some Class 1 software packages may provide an option for transferring files between computers with fax modems, using a Binary File Transfer (BFT) standard. Although the received file is not a fax image, transmitting the file is similar to sending a fax. Since the modem allows T.30 error correction mode (with HDLC framing up to 9600 bps), fax mode can also be used for BFT if supported by the Class 1 software package. The Binary File Transfer is an option in the fax software package, not a separate mode of operation.

9-10

Modem 3600

Page 144
Image 144
Black Box 3600 MODEM Binary File Transfer, Class 1 Result Code +FCERROR, Fax Autoanswer +FAA=, Command Description