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Multi-Tech Systems Modem Module MT3334SMI User Manual

Page 34

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ModemModule Developer’s Guide

MT3334SMI

34

Command:

+FCLASS=

Function:

Select Service Class

Values:

0, 1, 2

Default:

0 (data mode)

Result Codes: OK if the command is accepted; ERROR if the parameter value is out of range.
Description:

This command configures the Service Class for the modem.

The command options are:

+FCLASS=0

Select Data mode

+FCLASS=1

Select Fax Class 1 operation

+FCLASS=2

Select Fax Class 2 operation

Example: To configure the modem for Class 1 fax operation, enter the command AT+FCLASS=1
and hit Enter. The modem will then accept Class 1 commands.

Command:

+FTS=

Function:

Stop Transmission and Wait

Values:

= 0-255 in 10 ms intervals

Default:

0

Result Codes: OK if the command is accepted; ERROR if the parameter value is out of range.
Description:

The +FTS= command causes the modem to stop any transmission, then wait for the
amount of time specified by , then send an OK result code to the PC. If this
command is entered with the modem on-hook, the ERROR result code is displayed.
The main function of +FTS is to enforce the 75+/-20 ms of silent time needed
between modulation changes.

Note: The +FTS= command can be entered anywhere in the command string.

Command:

+FTS=?

Function:

Display the wait-for-silent time range

Values:

= 0-255 in 10 ms intervals

Default:

0

Result Codes: the current range of values supported by the modem.
Description:

The +FTS=? command causes the modem to display the valid (supported) range of
time intervals specified by the +FTS= command.

Command:

+FRS=

Function:

Stop Transmission and Wait

Values:

Default:

0

Result Codes: OK if the command is accepted; ERROR if the parameter value is out of range.
Description:

The +FRS= command causes the modem to listen for a specified amount of silence
on the line, then display an OK result code when silence has been present on the
line for the amount of time specified. The value

Note: The +FRS= command can be entered anywhere in the command string.