Multi-Tech Systems MT5600DSVD manual S32

MultiModemDSVD User Guide		4 AT Commands, S-Registers, and Result Codes
Register	Unit	Range	Default	Description
S18	seconds	0–255	0	Sets the length of time that the modem con-
				ducts an &T test before it returns to the
				command mode. If the value is zero, the test
				must be terminated from command mode
				by issuing an &T0 or H command. When
				S18 is non-zero, the modem returns the OK
				message upon test termination.
S24	seconds	0–255	0	Sets the length of time that the modem op-
				erates in normal mode with no detected
				telephone or serial port activity before en-
				tering low-power sleep mode. The timer is
				reset upon any serial port or telephone line
				activity.
S25	10 ms	0–255	5	Sets the length of time that the modem ig-
				nores DTR while taking the action specified
				by &D.
S29	10 ms	0–255	70	Sets the length of time that the modem goes
				on-hook when it encounters a flash dial
				modifier (!) in the dial string.
S30	10 ms	0, 1–255	0	Sets the length of time that the modem
				waits before disconnecting when no data is
				sent or received. A value of zero disables
				the timer.
S32	decimal	0–255	17	Sets the ASCII code for the XON character.
S33	decimal	0–255	19	Sets the ASCII code for the XOFF character.
S35	decimal	0–1	0	0 disables, 1 enables the V.25 data calling
				tone, which allows remote data/fax/voice
				discrimination.
S36	decimal	0–7	7	LAPM Failure Control. Specifies the fall-
				back action to take in the event of an LAPM
				negotiation failure. These fallback options
				are initiated immediately upon connection
				if S48 = 128. If an invalid number is entered,
				S36 acts as if the default value has been en-
				tered. (See S48.)
				0	Modem disconnects.
				1	Modem stays online and a direct
					mode connection is established.
				2	Reserved.
				3	Modem stays on-line and a normal
					mode connection is established.
				4	An MNP connection is attempted and
					if it fails, the modem disconnects.
				5	An MNP connection is attempted and
					if it fails, a direct mode connection is
					established.

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