Multi-Tech Systems MT2834BA Series, MT2834BL Series manual $MBn

		Appendix C - AT Command Summary
$MBn	n = speed	$MB75 selects CCITT V.23 mode.
		$MB300 selects 300 bps on-line.
		$MB1200 selects 1200 bps on-line.
		$MB2400 selects 2400 bps on-line.
		$MB4800 selects 4800 bps on-line.
		$MB9600 selects 9600 bps on-line.
		$MB14400 selects 14400 bps on-line
		$MB19200 selects 19200 bps on-line
		$MB28800 selects 28800 bps on-line
		* $MB33600 selects 33600 bps on-line
&Mn	n = 0 or 1	* &M0 selects Async when on-line.
		&M1 selects Sync when on-line.
Nd	d = 0 thru 9	Dial stored telephone number “d” (Do not include the
		letter D in this command.)
NdNe	d = 0 thru 9	Number Linking. If first number dialed is
	e = any other	busy, another stored number may be
	number 0	automatically dialed. In example, stored
	thru 9	number d is dialed, and if busy, stored
		number e is dialed.
O		Exit Command Mode and go into On-Line Mode.
P		* Modem will pulse-dial numbers following the P.
&Pn	n = 0 or 1	* &P0 means 60-40 pulse ratio.
		&P1 means 67-33 pulse ratio.
Qn	n = 0, 1 or 2	* Q0 means Result Codes sent.
		Q1 means Result Codes will be suppressed (quiet).
		Q2 means Dumb Answer Mode.
&Qn	n = 0 or 1	* &Q0 selects Multi-Tech command set.
		&Q1 selects AT command set.
Rn	n = 0 or 1	* R0 means modem will not reverse modes.
		R1 means modem will reverse modes.
&Rn	n = 0, 1 or 2	&R0 lets Clear to Send act normally.
		* &R1 forces Clear to Send on.
		&R2 drops for 1 second on disconnect.
&RP		Command Initiates a Retrain that makes the
		processor read Line Probe Information (valid only in
		V.34 mode).
$Rn	n = 0 or 1	* $R0 means disconnect after 12 retransmits.
		$R1 means do not disconnect after 12 retransmits.
&RFn	n = 0 or 1	&RF0 selects CTS follows RTS.
		* &RF1 selects CTS to act independently
Sr=n	r = 0-11, 13,	Sets value of Register “r” to value of “n”,
	15-19, 24-26,	where “n” is entered in Decimal format.
	29, 30, 32, 34...
Sr?	r = 0-11, 13,	Reads value of Register “r” and displays
	15-19, 24-26,	value in 3-digit Decimal format.
	30, 32 or 34...

*Factory Default

Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 102