Multi-Tech Systems MT3334HD8 manual Appendix E AT Command Summary, Return

				E AT Command Summary
Appendix E		AT Command Summary
	Command	Values	Description
	AT	n/a	Attention Code
			The attention code precedes all command lines
			except A/, A: and escape codes.
	RETURN	n/a	RETURN Key
			Press the RETURN (ENTER) key to execute most
			commands.
	A	n/a	Force Answer Mode
			Answer call immediately without waiting for ring.
	A/	n/a	Repeat Last Command
			Do not precede this command with AT. Do not press
			RETURN to execute.
	A:	n/a	Continuous Redial
			Continuous redial of last number until answered. (10
			redials in North American models. Not used on
			International or U.K. models.)
	&An	n = 0 or 1	Answerback
		*** &A0 Answerback off.
			&A1 Answerback on.
	$An	n = 0 or 1	Auto-Reliable Buffering
		***	$A0	Discard data received during establishment of
				reliable connection
			$A1	Buffer data received during establishment of
				reliable connection
	#An	n = 0–3	Auto Speed Detection in Answer Mode
		*** #A0		Start at maximum speed and fall back to 14400
				to 12000 to 9600 to 4800 to 2400 to 1200 to 300
				bps.
			#A1	Maximum speed only.
			#A2	Start at maximum speed and fall back
				incrementally to 4800 bps only.
			#A3	Start at 2400 bps and fall back to 1200 to 300
				bps only.
	Bn	n = 0 or 1	Answer Tone (International models only)
		***	B0	Select ITU-T V.21 answer tone.
			B1	Select Bell 103 answer tone.
	&BSn	n = 0 or 1	Maximum Reliable Block Size
			&BS0 Maximum transmit block size of 64 characters.
		***	&BS1 Maximum transmit block size of 256 characters.

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