
C-6 Cisco 2524 and Cisco 2525 Router User Guide
Ethernet Cable Assembly and Pinouts
Table C-3 Auxiliary Port Signaling and Cabling Using a DB-25 Adapter
Ethernet Cable Assembly and Pinouts
This section describes the pinouts for the Ethernet ports and cables.
Figure C-5 shows an Ethernet (AUI) cable assembly, and Table C-4 lists an AUI cable
pinout.
Figure C-5 Ethernet (AUI) Cable Assembly
1. Pin 1 is connected internally to Pin 8.
AUX Port
(DTE)
RJ-45-to-RJ-45
Roll-Over Cable
RJ-45-to-DB-25
Modem Adapter Modem
Signal RJ-45 Pin RJ-45 Pin DB-25 Pin Signal
RTS 1
1
84 RTS
DTR 2 7 20 DTR
TxD 3 6 3 TxD
GND 4 5 7 GND
GND 5 4 7 GND
RxD 6 3 2 RxD
DSR 7 3 8 DCD
CTS 8
1
1 5 CTS
H1031a
J2-1
J2-9
J2-15
J2-8
1-1
1-9
-15
1-8
J1
J2
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