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9-2 LAN Interface Supplement
Quick Reference
EIA/TIA 568B Wiring
EIA/TIA 568B Wiring
Table 9-1 Straight-Through Cable (Unshielded-twisted-pair (UTP) cable
with RJ-45 connectors)
Table 9-2 Cross-Over Cable (Unshielded-twisted-pair (UTP) cable with
RJ-45 connectors)
Standard, Straight-Through Wiring (each end)
Signal
Name
RJ-45
Pin #
Wire
Color
Pair #
RX+ 1 white/orange 2
RX- 2 orange
TX+ 3 white/green 3
TX- 6 green
Not
Used
4 blue 1
5 white/blue
7 white/brown 4
8 brown
Cross-Over Wiring
a
Connector A Connector B
Signal
Name
RJ-45
Pin #
RJ-45
Pin #
Signal
Name
RX+ 1 3 TX+
RX- 2 6 TX-
TX+ 3 1 RX+
TX- 6 2 RX-