Multi-Tech Systems 7500, 7600 manual Registers, Register Unit Range Default Description

ION 7500 / ION 7600 User’s GuideS-Registers

Command		Values	Default	Description
	Fallback and Fall			%E0 Disable fallback and fall forward.
%En		n = 0, 1, or 2	2	%E1 Enable fallback, disable fall forward.
	Forward Control
				%E2 Enable fallback and fall forward.
				$MB75 Selects CCITT V.23 mode
				$MB300 Selects 300 bps on-line
				$MB1200 Selects 1200 bps on-line
				$MB2400 Selects 2400 bps on-line
$MBn	Online BPS Speed	n = speed in bits	28,800	$MB4800 Selects 4800 bps on-line
		per second		$MB9600 Selects 9600 bps on-line
				$MB14400 Selects 14,400 bps on-line
				$MB19200 Selects 19,200 bps on-line
				$MB28800 Selects 28,800 bps on-line
				$MB33600 Selects 33,600 bps on-line
				$SB300 Selects 300 bps at serial port
				$SB1200 Selects 1200 bps at serial port
				$SB2400 Selects 2400 bps at serial port
				$SB4800 Selects 4800 bps at serial port
$SBn	Serial Port Baud Rate	n= speed in bits	115200	$SB9600 Selects 9600 bps at serial port
		per second		$SB19200 Selects 19,200 bps at serial port
				$SB38400 Selects 38,400 bps at serial port
				$SB57600 Selects 57,600 bps at serial port
				$SB115200 Selects 115,200 bps at serial port
				$SB230400 Selects 230,400 bps at serial port

S-Registers

S-registers are memory locations that store certain modem values or parameters.

S commands are used to read or alter the contents of S-registers.

Register	Unit	Range	Default	Description
S6	seconds	2-65*	2*	Sets the time the modem waits after it goes off-hook before it begins to dial the
				telephone number.
S7	seconds	1-255*	50*	Sets the time the modem waits for a carrier signal before aborting a call. Also sets
				the wait for silence time for the @ dial modifier.
S8	seconds	0-65	2	Sets the length of a pause caused by a comma character in a dialing command.
S10	100 ms	1-254	20	Sets how long a carrier signal must be lost before the modem disconnects.
S11	1ms	50-150*	95*	Sets spacing and duration of dialing tones.
S28	decimal	0, 1-255	1	0 disables, 1.255 enables V.34 modulation.
S30	1 minute	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. See also the \T command
S35	decimal	0-1	0	0 disables, 1 enables the V.25 calling tone, which allows remote data/fax/voice
				discrimination.
S36	decimal	0-7	7	Specifies the action to take in the event of a negotiation failure when error control is
				selected. (See S48.)

Modem AT Commands Technical Note Page 285