Cisco Systems UBR7225VXR specifications Identifying an RJ-45 Straight-Through Cable, RJ-45 Pin

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. See Figure C-4.

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

Pin 1

Pin 1

62740

Note If your cable was purchased from Cisco, pin 1 is white. Pins 4, 5, 7, and 8 are not connected.

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 uBR7225VXR Universal Broadband Router Hardware Installation Guide
	OL-17309-02						C-5