Appendix C Cable Specifications

Fast Ethernet Port Cables and Pinouts

Figure C-3 RJ-45 Crossover Cable Identification

Pin 1

Pin 2

Pin 3

Pin 6

62741

Identifying an RJ-45 Straight-Through Cable

You can identify a straight-through cable by comparing the two modular ends of the cable. Hold the cables side-by-side with the tab at the back. The straight-through cable’s wires are in the same sequence at both ends of the cable.

Figure C-4 RJ-45 Straight-Through Cable Identification

Pin 1

Pin 1

62740

Note If your cable was purchased from Cisco Systems, pin 1 is white.

Table C-3lists the pinouts for the two Fast Ethernet ports.

Table C-3 10BASE-T RJ-45 Connector Pinouts

 

 

RJ-45 Pin

Description

RJ-45 Pin

Description

 

 

 

 

 

1

Tx+

3

Rx+

 

 

 

 

 

2

Tx–

6

Rx–

 

 

 

 

 

 

 

 

 

 

 

Cisco uBR7100 Series and Cisco uBR7100E Series Universal Broadband Router Hardware Installation Guide

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OL-5916-01

 

 

 

 

C-5

 

 

 

 

 

 

 

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Cisco Systems UBR7100E manual Identifying an RJ-45 Straight-Through Cable, RJ-45 Pin Description