ADTRAN ISU 512 Appendix C AT Commands, Commands should be entered without the AT prefix

Appendix C

AT Commands

The AT commands (shown in Table C-A) can be used with the Maintenance interface available at 9600 bps (8, n, 1) through the CHAIN IN port on the back panel. See the section The Maintenance Interface in Chapter 3 for more informa- tion.

Commands should be entered without the AT prefix.

		Table C-A
		AT Commands
Command	Definition	Function
A	Answer	Places the ISU 512 into answer mode
D	Dial	Precedes the telephone access number [ATD551212]
H	Hangup	Disconnects the current call
l0	Identify unit	Displays model number
l1	-	Displays software version
S	S-Register	-
SS	S String register	-
&W	-	Saves current configuration to EEPROM
	Carrier Detect (CD) Control Line options
&C0	-	CD forced
&C1	-	CD normal
&C2	-	CD with local disconnect
&C3	-	CD off link down

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