Twisted pair cable, Table b-2 rj-45 port pin assignments – Compaq HB1004 User Manual
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B-3
Compaq HB1004 10Base-T Ethernet Hub
Writer: Weldon W. Rowan Project: Troubleshooting Comments:
File Name:SAB_B.DOC Last Saved On:7/2/98 2:37 PM
Table B-2
RJ-45 Port Pin Assignments
Pin
Assignment
(Hub Ports 1 – 4)
Assignment
(MDI/MDI-X Port, other Device)
1
Input Receive Data +
Output Transmit Data +
2
Input Receive Data -
Output Transmit Data -
3
Output Transmit Data +
Input Receive Data +
6
Output Transmit Data -
Input Receive Data -
4, 5, 7, 8
Not Used
Not Used
Twisted Pair Cable
Figure B-1 shows the wiring for Straight-Through and Crossover twisted-pair
cable.
S tra ig ht-T hro u gh
1 IR D +
2 IR D -
3 O TD +
6 O TD -
1 O TD +
2 O TD -
3 IR D +
6 IR D -
(H ub)
(A dapter)
C ro ssove r
1 IR D +
2 IR D -
3 O TD +
6 O TD -
(H ub)
(H ub)
1 IR D +
2 IR D -
3 O TD +
6 O TD -
Figure B-1 Straight-through and Crossover UTP cables