ADTRAN ISU 128 user manual Appendix D, Register List

			Appendix D
			S-Register List
S0	AUTO ANSWER	Determines how the ISU 128 answers an
		incoming call.
		0 = Disable (ISU 128 does not answer call).
		1	= Enable (ISU 128 answers all calls).
		2 = Dump all calls.
S2	BREAK IN	Determines which key or character (in ASCII code)
	CHARACTER	defines the escape command. The standard escape
		character is a + sign (ASCII value of 43 decimal). To
		change the character set, set S2 to the desired ASCII value.
		Range = 0 to 127
S3	END OF LINE	Determines which key or character (in ASCII code)
	CHARACTER	ends a command line. The standard end-of-line
		character is the carriage return (ASCII value of
		13 decimal).
		Range = 0 to 127
S4	LINE FEED	Determines which key or character (in ASCII code)
	CHARACTER	advances the cursor to the next line after ending a
		command line or after an ISU 128 message. The
		standard character is the line feed (ASCII value of
		10 decimal).
		Range = 0 to 127
S5	BACK SPACE	Determines which key moves the cursor back one
	CHARACTER	space to erase a character. The standard character is
		the backspace (ASCII value of 8 decimal).
		Range = 0 to 127
S7	CONNECT TIME	Determines how long the ISU 128 waits for an
		outgoing call to be answered.
		15	= 15 seconds
		30	= 30 seconds
		60	= 1 minute

120 = 2 minutes

240 = 4 minutes

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