ADTRAN ISU 512 user manual 5ESS

		Appendix C. AT Commands
		Table C-A
		AT Commands
Command	Definition	Function
&Z4	-	Stored number 4
&Z5	-	Stored number 5
&Z6	-	Stored number 6
&Z7	-	Stored number 7
&Z8	-	Stored number 8
&Z9	-	Stored number 9
		ISDN Switch Type Options
_S0	-	5ESS
_S1	-	DMS-100
_S2	-	National ISDN-1
_S3	-	NEC
_S4		EuroISDN (only available on the ISU 512 ST)
	ISDN U-interface Operational Mode Options
_X0	-	ISU timing slaves to network (NT)
_X1	-	IU is U-interface timing master (LT)
		Reset
_Z	-	Unit reset, equivalent to cycling power
_F	-	Factory reset, equivalent to pressing 0 on power up

61202.086L1-1 ISU 512 User Manual 87