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Installing and Operating AN/DC and ANH-8/DC Systems
C-6
312410-A Rev 00
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.
 shows the pin assignment for the standard 15-pin AUI receptacle and 
identifies its pin locations. 
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-3.
AUI Port Pin Assignments
Pin Assignment
Pin No.
Signal Name
1
Ground
2
CI-A
3
DO-A
4
Ground
5
DI-A
6
+12 V dc Return
7
(not connected)
8
(not connected)
9
CI-B
10
DO-B
11
Ground
12
DI-B
13
+12 V dc
14
Ground
15
Ground
Pin 1
Pin 8
Pin 9
Pin 15