ADTRAN user manual Figure A-1 NT1 T400 Circuit Pack Connector Pin Assignments

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	S/T Transmit	DT	55	56
		DT	53	54

	(Customers 1 & 2
	(Customers 1 & 2		51	52
	in parallel)		51	52
	in parallel)
		DR	49	50
		TR	47	48
		TR	45	46
			45	46
	U Transmit/Receive		43	44
			43	44
		TT	41	42
		TT
			39	40
			37	38
		-48V	35	36
		-48V	33	34
			33	34
			31	32
			29	30
	Frame GND		27	28
	Frame GND
	1 Backup Power		25	26
		E	23	24
	S/T Power	E	21	22
	S/T Power	M	21	22
		M
			19	20
		GND	17	18
		GND
		R1	15	16
		R1
			13	14
	S/T Transmit	Frame	11	12
	(Customers 1 & 2	GND	9	10
	in parallel		9	10
	in parallel		7	8
			7	8
	1 When pin 25 is pulled to ground,	T1	5	6
	1 When pin 25 is pulled to ground,	T1	3	4
	the NT1 Type 400 is signaled that		3	4
	its battery backup is in use.		1	2
			1	2
	Figure A-1: NT1 T400 Circuit Pack Connector Pin Assignments
10	NT1 T400 User Manual			61212016L1-1

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Contents NT1 Type Canadian Standards Association Isdn Adtran Year 2000 Y2K Readiness Disclosure Customer Instructions Canadian Emissions Requirements Canadian Equipment Limitations Table of Contents Tables FiguresUnit Overview GeneralRear Panel Powering TEs from the NT1Basic Rate Description Passive Bus DescriptionSetting the Option Switches InstallationConnecting the Terminal Equipment Powering Up the NT1 Type 400 StandaloneTroubleshooting Remote Testing MaintenanceRepair and Return Loop Interface Specifications61212016L1-1 Appendix a NT1 Type 400 Circuit Pack Rack Installation Figure A-1 NT1 T400 Circuit Pack Connector Pin Assignments Short Passive BUS Appendix B BUS Configurations61212016L1-1 Technical Support and Warranty Information