Nortel Networks 114200-E Ethernet Attachment Unit Interface AUI, Table C-3 AUI Pin Assignments

Installing and Operating Passport ARN Routers

Ethernet Attachment Unit Interface (AUI)

The ARN Ethernet 10BASE-T base module, Ethernet expansion module, and Ethernet/tri-serial expansion modules contain a 10BASE-T standard 802.3 AUI DB-15 receptacle with a slide lock.

Note: The AUI is designed only for connection to a transceiver. Connecting the AUI directly to an AUI on an Ethernet station (without a transceiver) violates IEEE 802.3 standards.

Table C-3 shows the pin assignments for the standard 15-pin AUI receptacle on the ARN base or expansion module and identifies its pin locations.

Table C-3.	AUI Pin Assignments
Pin Assignment	Pin No.	Signal Name
	1	GND
	2	CI-A
	3	DO-A
	4	GND
Pin 8	5	DI-A
	Pin 1
	6	+12 V DC Return
Pin 15	7	Not used
	Pin 9
	8	Not used
	CAB0107A	CI-B
	9
	10	DO-B
	11	GND
	12	DI-B
	13	+12 V DC
	14	GND
	15	GND

C-6 114200-E Rev 00