Cisco Systems UBR7225VXR specifications Console Port Cables and Pinouts, RJ-45-to-DB-9

Appendix C Cable Specifications

Console and Auxiliary Port Cables and Pinouts

Figure C-2 RJ-45 Rollover Cable Identification

Pin 1 and pin 8

should be the

same color

Pin 1 Pin 8

H3824

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.

Note If your cable was purchased from Cisco, pin 8 is white.

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. Table C-1lists the signals and 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 Signaling and Cabling Using a DB-9 Adapter

			RJ-45-to-DB-9
Console Port (DTE)	RJ-45-to-RJ-45 Rollover Cable		Terminal Adapter	Console Device
Signal	RJ-45 Pin	RJ-45 Pin	DB-9 Pin	Signal
RTS	11	8	8	CTS
DTR	2	7	6	DSR
TxD	3	6	2	RxD
GND	4	5	5	GND
GND	5	4	5	GND
RxD	6	3	3	TxD
DSR	7	2	4	DTR
CTS	81	1	7	RTS

1. Pin 1 is connected internally to pin 8.

Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide

OL-17309-02 C-3