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Appendix C
Cable Specifications
Figure C-2
The colored wires at one connector are in the reverse order at the other connector (reverses pins 1 and 8,
2 and 7, 3 and 6, 4 and 5, 5 and 4, 6 and 3, 7 and 2, 8 and 1).
The wires of the straight-through cable are in the same sequence at both ends of the cable.
If your cable was purchased from Cisco, pin 8 is white.
Note
Console Port Cables and Pinouts
Use the RJ-45-to-RJ-45 rollover cable and RJ-45-to-DB-9 female DTE adapter (labeled TERMINAL) to
connect the console port to a PC running terminal emulation software.
pinouts for the asynchronous serial console port, the RJ-45-to-RJ-45 rollover cable, and the
RJ-45-to-DB-9 female DTE adapter.
Table C-1
Console Port (DTE)
Signal
RTS
DTR
TxD
GND
GND
RxD
DSR
CTS
1. Pin 1 is connected internally to pin 8.
OL-17309-01
RJ-45 Rollover Cable Identification
Pin 1 and pin 8
should be the
same color
Pin 1
Console Port Signaling and Cabling Using a DB-9 Adapter
RJ-45-to-RJ-45 Rollover Cable
RJ-45 Pin
RJ-45 Pin
1
1
8
2
7
3
6
4
5
5
4
6
3
7
2
1
8
1
Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide
Console and Auxiliary Port Cables and Pinouts
Pin 8
Table C-1
lists the signals and
RJ-45-to-DB-9
Terminal Adapter
Console Device
DB-9 Pin
Signal
8
CTS
6
DSR
2
RxD
5
GND
5
GND
3
TxD
4
DTR
7
RTS
C-3
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