Identifying An Rj-45 Straight-Through Cable - Cisco UBR7225VXR Hardware Installation Manual

Appendix C Cable Specifications
Figure C-3

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. See
Figure C-4
If your cable was purchased from Cisco, pin 1 is white. Pins 4, 5, 7, and 8 are not connected.
Note
Table C-3
Table C-3
RJ-45 Pin
1
2
OL-17309-01
RJ-45 Crossover Cable Identification
Pin 1
Pin 2
Figure
RJ-45 Straight-Through Cable Identification
Pin 1 Pin 1
lists the pinouts for the two Fast Ethernet ports.
10BASE-T RJ-45 Connector Pinouts
Description
Tx+
Tx–
Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide
Pin 3
Pin 6
C-4.
RJ-45 Pin
3
6
Fast Ethernet Port Cables and Pinouts
Description
Rx+
Rx–
C-5