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I'm no cabling expert! The information on this page reflects cable and standards I've observed - not industry standards. "Typical" means "the way we do it where I've worked!" As always, use this information at your own risk.

10Base-T Ethernet

10Base-T Cable pinout
RJ-45 Pin no.FunctionWire color Wire color
1TD+Grn/WhtOrg/Wht
2TD-GrnOrg
3RD+Org/WhtGrn/Wht
6RD-OrgGrn






Token Ring (RJ-45)

Token Ring Cable pinout
RJ-45 Pin no.FunctionWire colorWire color
3Org/WhtGrn/Wht
4BluBlu
5Blu/WhtBlu/Wht
6OrgGrn




"Typical" Token Ring RJ-45 Patch Cable
Wire Color and Pair Combinations
RJ-45 Pin no.ColorDesignation
1Org/WhtPair 3-1 (Not used)
2OrgPair 3-2 (Not used)
3Grn/WhtPair 2-1
4BluPair 1-1
5Blu/WhtPair 1-2
6GrnPair 2-2
7Brn/WhtPair 4-1 (Not used)
8BrnPair 4-2 (Not used)






56K DDS

56K DSU/CSU RJ-45 Pinout
Pin AssignmentPin no.Signal
1TD (Ring)
2TD (Tip)
3(Not used)
4(Not used)
5(Not used)
6(Not used)
7RD (Tip)
8RD (Ring)






ISDN BRI

ISDN Basic Rate Interface RJ-45 Pinout
Pin AssignmentPin no.Signal
1(Not used)
2(Not used)
3Tx +
4Rx +
5Rx -
6Tx -
7(Not used)
8(Not used)