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Figure C-1 shows straight-through connector wiring to be used when the crossover function is
implemented within the hub/switch.
Figure C-1. 10/100 straight-through wiring for RJ-45 connector
10/100 Crossover Pinouts
When the crossover function is not provided within the hub/switch, you must implement the
crossover through the twisted-pair media using the physical pinouts indicated in Table C-3.
Pin
1
2
3
4
5
6
7
8
Figure C-2 shows the correct 10/100 wiring to use when the crossover function is implemented
externally (in the twisted-pair cabling).
Figure C-2. External crossover for RJ-45 connector
Table C-3
10/100 Pinouts Using External Crossover
Function
Color Match
TD+
White/Orange
TD-
Orange/White
RD+
White/Green
Blue/White
White/Blue
RD-
Green/White
White/Brown
Brown/White
Specifications C-3
Function
Pin
RD+
3
RD-
6
TD+
1
TD-
2
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