Multi-Tech Systems MT2834BL Series Appendix C AT Command Summary, Command Values Description

		Appendix C - AT Command Summary
Appendix C - AT Command Summary
Command	Values	Description
AT		Attention Code that precedes most command strings
		except A/, A: and Escape Codes.
RETURN		Pressing RETURN key executes most commands.
$		This symbol placed in dialing string enables the
		modem to detect AT&T's "call card" tones for
		accessing user's calling card to originate an on-line
		connection.
A		Answer call, even if no ring present. Repeat last
		command. (Do not precede this command with AT.
		Do not hit RETURN to execute.)
A:		Continuous redial (10 redials in DOC units) of last
		number until answered. (Not used Internationally.)
$An	n = 0 or 1	* $A0 discards data during auto-reliable time period.
		$A1 buffers data during auto-reliable time period.
#An	n = 0 thru 3	* #A0 selects initial handshake at:33,600 to 31,200 to
		28,800 to 24000 to 21,600 to 19,200 to 16,800 to
		14,400 to 12,000 to 9600 to 4800 to 2400 to 1200 to
		300 bps.
		#A1 selects initial handshake at 33,600 bps only.
		#A2 selects initial handshake at 33,600 to 31,200 to
		28,800 to 24000 to 21600 to 19,200 to 16,800
		19,200 to 14,400 to 9600 to 4800 bps.
		#A3 selects initial handshake at 2400 to 1200 to 300
		bps.
		* Factory Default Setting
Bn	n = 0 or 1	* B0 selects V.21 answer tone.
		B1 selects Bell answer tone.
&Bn	n = 0 or 1	* &B0 means normal transmit buffer size.
		&B1 means reduced transmit buffer size.
&BSn	n = 0 or 1	&BS0 means maximum transmit block size of 64
		characters.
		* &BS1 means maximum transmit block size of 256
		characters.
$BAn	n = 0 or 1	* $BA0 means speed conversion is on.
		$BA1 means speed conversion is off.
&Cn	n = 0,1,2,4	&C0 forces Carrier Detect on.
		* &C1 lets Carrier Detect act normally.
		&C2 lets Carrier Detect drop S24 time on
		disconnect.
		&C4 resets modem when Carrier Detect drops.
&CDn	n = 0 or 1	* &CD0 execute cleardown on disconnect.
		&CD1 do not execute cleardown on disconnect.
Ds	s = phone #	Dial a telephone number “s,” where s may include
		up to 60 digits or T, P, R, comma and ; characters.

*Factory Default

Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 99