Multi-Tech Systems MT5634ZLX/FE manual AT Commands, S-Registers, and Result Codes

Chapter 3 - AT Commands, S-Registers, and Result Codes

S-Registers

S-Registers are accessed using the S command (ATSn=x). The S-Registers supported by the MT5634ZLX/FE are described below.

S-Reg.	Values	Default	Description
S0=	0 - 255 000		S0 sets the number of the rings required before the modem
			automatically answers a call. Set S0=0” to disable auto-answer
			mode.
S1=	0 - 255 000		S1 counts the incoming rings and stores the value to this register.
			The value of this register is incremented with each ring. If no rings
			occur over an 8 sec. interval, this register is cleared. User can read
			but should not change this value.
S2=	0 - 255 043		S2 holds the decimal value of the ASCII character used as the
			escape character. The default value (043) corresponds to an ASCII
			character “+”. A value of 128 to 255 disables the escape process
			(i.e., no escape character is recognized).
S3=	0 - 127 013		S3 holds the decimal value of the Carriage Return <CR> character
			used as the command line and result code terminator. Pertains to
			asynchronous operation only.
S4=	0 - 127 010		S4 holds the decimal value of the character recognized as a line
			feed. The line feed control character is output after the carriage
			return control character if verbose result code are used.
S5=	0 - 32,	127	S5 holds the decimal value of the character recognized as a
			backspace. The modem will not recognize the backspace character
			if this register is set to a value greater than 32008.
S6=			S6 sets the length of time, in seconds, that the modem must wait
			(minimum 2 seconds even if the value is less than 2) after going off-
			hook before dialing the first digit of the telephone number.
	2 - 65		For international version	002
	4 - 65		For Japanese version	004
S7=			S7 sets the time, in seconds, that the modem must wait before
			hanging up because carrier is not detected
	1 - 255		For international version	050
	35 - 59		For Japanese version	050
S8=	0 - 65	002	S8 sets the time, in seconds, that the modem must pause when the
			“,” dial modifier is encountered in the dial string.
S10=	1 - 255 020		S10 sets the length of time, in tenths of a second, that the modem
			waits before hanging up after a loss of carrier.
S11=	50 - 150 095		S11 sets the DTMF duration and inter digit delay. Sets the duration
			and spacing, in mini-seconds, in DTMF touch tine dialing.
S28=	0 - 255 001		V.34 modulation enable/disable:
			0: disabled
			1- 255: enabled

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