Compaq NC3120 Guide de l'utilisateur télécharger pdf (Page 20)

Specifications C-3

Figure C-1 shows the straight-through 10/100 connector wiring to be used when the crossover

function is implemented on the hub or 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 or switch, you must implement the

crossover through the twisted-pair media using the physical pinouts indicated in Table C-3.

Table C-3

10/100 Pinouts Using External Crossover

Pin Function Color Match Function Pin

1 TD+ White/Orange RD+ 3

2 TD- Orange/White RD- 6

3 RD+ White/Green TD+ 1

4 Blue/White

5 White/Blue

6 RD- Green/White TD- 2

7 White/Brown

8 Brown/White

Figure C-2 shows the correct 10/100 wiring to use when the crossover function is implemented

externally in the twisted-pair cabling.

White/Orange

Orange/White

White/Green

Green/White

Figure C-2. 10/100 external crossover for RJ-45 connector

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Compaq NC3120 Guide de l'utilisateur Page 20