Multi-Tech Systems MT5600DSVD Communications Mode, Pulse Dial Make/Break Ratio, Test Commands

MultiModemDSVD User Guide		4 AT Commands, S-Registers, and Result Codes
Command:	&Mn	Communications Mode
Values:		n = 0
Default:		0
Description:		This command determines the DTR operating mode. The mo-
		dem treats the &M command as a subset of the &Q command.
	&M0	Selects direct asynchronous operation. Note that the command
		sequence &M0\N0 selects normal buffered mode, but the
		command sequence \N0&M0 selects direct mode. This is be-
		cause the \N0 command is analogous to the &Q6 command.
Command:	&Pn	Pulse Dial Make/Break Ratio
Values:		n = 0
Default:		0
Description:	&P0	Selects a make/break dial ratio of 39:61 at 10 pulses per sec-
		ond.
Command:	&Qn	Asynchronous Communications Mode
Values:		n = 0, 5, 6
Default:		5
Description:		This command is an extension of the &M command, and is used
		to control which connection modes are permitted. It is used in
		conjunction with S36 and S48. (See also the \N command.)
	&Q0	Selects direct asynchronous operation. See &M0.
	&Q5	The modem will try to negotiate an error-corrected link. The
		modem can be configured using S36 to determine whether a
		failure will result in the modem disconnecting or falling back
		to a non-error-correction connection. See also \N3.
	&Q6	Selects asynchronous operation with speed buffering and no
		error correction. Same as \N0.
Command:	&Sn	Data Set Ready (DSR) Control
Values:		n = 0 or 1
Default:		0
Description:	&S0	Force DSR high (on) at all times.
	&S1	Let DSR go high only during a connection.
Command:	&Tn	V.54 Test Commands
Values:		n = 0, 1, 3, 4, 5, 6, 7, or 8
Default:		None
Description:		The modem can perform selected test and diagnostic functions.
		A test can be run only when the modem is in asynchronous
		operation in non-error-correction mode (normal or direct mode).
		For tests 3, 6, and 7, a connection between the two modems
		must first be established. To terminate a test in progress, the
		escape sequence (+++) must be entered first, except for param-
		eters 7 and 8. If S18 is non-zero, a test terminates automatically
		after the time specified by S18 and displays the OK message.
	&T0	Abort. Stop any test in progress.
	&T1	Start local analog loopback, V.54 Loop 3. If a connection exists
		when this command is issued, the modem hangs up. The CON-
		NECT XXXX message is displayed upon the start of the test.

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