Multi-Tech Systems Modem Module MT3334SMI - Manual (Page 34)

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: = 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 +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 is in 10 millesecond intervals.
The command terminates when either the specified amount of silent time has been
detected, or when the PC sends the modem another character (which is discarded).
The modem returns the OK result code in either case. If this command is entered
with the modem on-hook, the ERROR result code is displayed. The main function of
the +FRS= command is to determine when it is safe to reverse the line and start
transmitting.
Note: The +FRS= command can be entered anywhere in the command string.