Chapter 3 - Class 1 Fax Commands
MT3334SMI 35
Command: +FRS=? <Enter>
Function: Display the range of stop-transmission-and-wait period values
Values:<time> = 0-255 in 10 ms intervals
Default:0
Result Codes: the current range of values supported by the modem.
Description: The +FRS=? command causes the modem to display the current set of stop-
transmission-and-wait period values supported (specified by the +FRS=<time>
command).
Command: +FTM=<MOD> <Enter>
Function: Transmit data with <MOD> carrier
Values:<MOD> = 3, 24, 48, 72, 73, 74, 96, 97, 98, 121, 122, 145, 146
Default: 3 (V.21 ch.2 @ 300 bps)
Result Codes:CONNECT at start of training pattern transmission; ERROR if the parameter value is
out of range.
Description: The +FTM command causes the PC to transmit data using the fax modulation
specified in <MOD> (see Table 3-1 for values). The modem displays the CONNECT
result code, then tranmits the proper training sequence in the selected mode,
followed by constant 1 bits until data is received from the PC. The modem buffers
data in this mode, using the flow control method defined by the &E command. When
the modem's transmit buffer is emptied, and if the last character transmitted was not
a NUL, the modem turns off tranmit carrier, returns to Command mode, and displays
the OK result code.
Note: The +FTM= command must be entered as the last command in the command string (i.e., it
must be followed by the <Enter> key).
Command: +FTM? <Enter>
Function: Display the range of valid transmit data modulation values
Values:<MOD> = 3, 24, 48, 72, 73, 74, 96, 97, 98, 121, 122, 145, 146
Default: 3 (V.21 ch.2 @ 300 bps)
Result Codes: the current value supported by the modem.
Description: The +FTM? command causes the modem to display the current set of accepted
modulation for transmit data values (specified by the +FTM=<MOD> command).
Command:+FRM =<MOD> <Enter>
Function: Facsimile Receive with <MOD> carrier
Values: see Table 3-1 for <MOD> (modulation) values
Default: 3 (V.21 ch.2 @ 300 bps)
Result Codes: CONNECT, NO CARRIER, or +FCERROR
Description: The +FRM= command causes the modem to enter fax receive mode using the
modulation specified by <MOD> (refer to Table 3-1 for <MOD> values). The modem
returns to Command mode on loss of carrier, then displays the NO CARRIER result
code on the PC. When the modem detects the selected carrier, it sends the
CONNECT message. If a different signal is detected, a +FCERROR (Connect Error)
is displayed, and the modem returns to Command mode. The modem uses the flow
control method defined by the &E command. If the PC sends any character except
DC1 or DC3, the modem enters Command mode, and causes the PC to display the
OK result code. If this command is entered with the modem on-hook, the ERROR
result code is displayed.
Note: The +FRM= command must be entered as the last command in the command string (i.e., it
must be immediately followed by the <Enter> key).