Nortel Networks AN/DC Attachment Unit Interface AUI Ports, AUI Port Pin Assignments, Table C-3

Installing and Operating AN/DC and ANH-8/DC Systems

Attachment Unit Interface (AUI) Ports

The AN/DC back panel and ANH-8/DC front panel contains a standard 802.3 AUI DB-15 receptacle connector with a slide lock for connection to the AUI. You can use the Order No. 7115 Ethernet cable, described in the Cable Guide for Routers and BNX Platforms, for connections to this port.

The AUI transceiver (XCVR) port provides broadband, baseband, fiber, and shielded twisted-pair support, depending on the transceiver and cabling you use. The AUI interface connects internally to the Ethernet repeater.

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

Table C-5 shows the pin assignment for the standard 15-pin AUI receptacle and identifies its pin locations.

Table C-3.	AUI Port Pin Assignments
Pin Assignment		Pin No.	Signal Name
		1	Ground
		2	CI-A
		3	DO-A
		4	Ground
		5	DI-A
Pin 8	Pin 1	6	+12 V dc Return
		7	(not connected)
Pin 15	Pin 9	8	(not connected)
		9	CI-B
		10	DO-B
		11	Ground
		12	DI-B
		13	+12 V dc
		14	Ground
		15	Ground

C-6 312410-A Rev 00