Table Of Contents

Crossover Cable Pinouts

Crossover Cable Pinouts

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This appendix provides the pinouts for creating a crossover cable if a standard crossover cable is not available. You must use a crossover cable to connect the bridge directly to the Ethernet port on a computer.

Table C-1 below lists the signals and pins on each end of the cable. The wire on the pin 1 location on cable end A must be connected to the pin 3 location on cable end B, and so on. Figure C-1 shows the pin numbering on an RJ-45 connector.

Table C-1

Cable End A		Cable End B
Signal	Pin	Pin	Signal
Tx+	1	3	Rx+
Tx-	2	6	Rx-
Rx+	3	1	Tx+
-	4	4	-
-	5	5	-
Rx-	6	2	Tx-
-	7	7	-
-	8	8	-

Pinouts for a Crossover Cable

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Note Pins 3 and 6 at cable end A must be a twisted pair wired through to pins 1 and 2, respectively, at B.
Pins 1 and 2 at cable end B must be a twisted pair wired through to pins 3 and 6, respectively, at cable end A.
Pins 4, 5, 7, and 8 are not used in this application, although they may be wired in the cable.

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Figure C-1 Pin Numbering on an RJ-45 Connector