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64 536EX Chipset Developer’s Manual
Intel Confidential
Fax Class 1 AT Commands
Fax Class 1 AT Commands 5
The 536EX chipsets implement the EIA-578 data/fax Class 1 AT command set standard. This AT
command set allows a DTE (with Class 1 communication software) and a 536EX-based modem to
communicate with Group 3 fax machines. In addition, these chipsets provide fax identity and test
commands. Fax identity commands are described in Table 22; all other fax AT commands are
provided in Table 24 on page 67.
5.1 Fax Identity Commands
The fax identity commands are AT+FMFR?, AT+FMDL?, AT+FMI, AT+FMM, AT+FMR, and
AT+FREV?. These commands respond back with modem manufacturer, product model, and
product revision information.
5.2 Fax Class 1 Commands
The fax Class 1 AT commands are divided into three types: class selection and capabilities, data
stream transfers, and silence-time timers. All fax mode commands, except the silence-time timers,
must be the last command on the command line.
Each command may be used as follows:
+F<command>? Reads current setting
+F<command> = ? Reads permissible settings
+F<command> = <parameter> Sets parameters
Note: To originate a call, answer, and hang up, use the ATD, ATA, and ATHn commands, respectively.
Table 22. Fax Identity Command Descriptions
Command Default Description
+FMFR?/+FMI none
Identifies Modem Manufacturer: This command causes the DCE to send a message to the DTE
indicating the DCE manufacturer. This command is identical to ATI2 and AT+GMI.
AT+FMFR?
Intel Corporation
OK
+FMDL?/+FMM none
Identifies Product Model: This command causes the DCE to report the modem chipset name.
This command is identical to ATI1 and AT+GMM.
AT+FMDL?
Intel 536EP V.92 Modem
OK
+FREV?/+FMR none
Identifies Product Version Number: This command causes the DCE to report the modem
chipset revision level. This command is identical to ATI4 and AT+GMR.
AT+FREV?
536EP Release 4.28 - Dec 10 2001
OK