Multi-Tech Systems MT3334SMI manual +FRM=? Enter

ModemModule Developer’s Guide

Command:	+FRM=? <Enter>
Function:	Display the valid range of receive 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 range supported by the modem.
Description:	The +FRM=? command causes the modem to display the current modulation for
	receive data spcified by the +FRM=<MOD> command.
Command:	+FTH=<MOD> <Enter>
Function:	Transmit HDLC data with <MOD> carrier
Values:	see Table 3-1 for <MOD> (modulation) values
Default:	3 (V.21 ch.2 @ 300 bps)
Result Codes: OK, ERROR, or CONNECT
Description:	The +FTH command causes the modem to transmit data in HDLC protocol using the
	selected modulation (see Table 3-1 for modulation <MOD> values). The modem
	buffers data in HDLC transmit mode, using the configured method of flow control to
	pause PC data, as necessary. If the PC sends no data for 5 seconds after the

CONNECT message, the modem turns off its transmit carrier, returns to Command mode, and displays the OK message.

Note: The +FTH command must be entered as the last command in the command string (i.e., it must be immediately followed by the <Enter> key).

Command:	+FTH=? <Enter>
Function:	Displays the valid range of transmit 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 range of valid values supported by the modem.
Description:	The +FTH=? command causes the modem to display the set of supported transmit
	modulations specified by the +FTH=<MOD> command (refer to Table 3-1).
Command:	+FRH=<MOD> <Enter>
Function:	Receive HDLC data with <MOD> carrier
Values:	see Table 3-1 for <MOD> (modulation) values
Default:	3 (V.21 ch.2 @ 300 bps)
Result Codes: NO CARRIER, +FCERROR, OK, or ERROR
Description:	The +FRH command causes the modem to receive HDLC packet data using the
	modulation mode selected with <MOD>, then delivers the next frame to the PC.
	Possible <MOD> values are shown in Table 3-1. If other than an HDLC packet is
	detected, the modem displays the +FCERROR (Connect Error) message, returns to
	Command mode, then displays the NO CARRIER message. If this command is
	entered with the modem on-hook, the ERROR result code is displayed.

Note: The +FRH command must be entered as the last command in the command string (i.e., it must be immediately followed by the <Enter> key).

Command:	+FRH=? <Enter>
Function:	Displays the valid range of receive modulation values
Values:	<MOD> = 3, 24, 48, 72, 73, 74, 96, 97, 98, 121, 122, 145, 146
Default:	3
Result Codes: the valid range of values supported by the modem.
Description:	The +FRH=? command causes the modem to display the set of supported receive
	modulation values (specified by the +FRH=<MOD> command).

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