3com 5108M-TP Manual De Usuario
A - 4 ONline Ethernet 10BASE-T Module User’s Guide
Refer to Figure A-1 for an example of this connector and the cable pin-outs.
Figure A-1. RJ45 Connector Pin-outs
Some installations may have 50-pin Telco connectors at the wiring closet.
We recommend using a patch panel that converts from 50-pin to RJ45-type
connectors. This allows direct connection to the ONline Ethernet 10BASE-T
Module in your ONline System Concentrator.
We recommend using a patch panel that converts from 50-pin to RJ45-type
connectors. This allows direct connection to the ONline Ethernet 10BASE-T
Module in your ONline System Concentrator.
Twisted Pair Cables
The cables that are supported must meet the following qualifications:
❑
22, 24, or 26 gauge twisted pair cable
❑
80 to 150 ohm impedance
❑
minimum of 2 pairs
Usually, a pair on a twisted pair cable is designated by a solid color wire
twisted with a striped wire with the same color.
twisted with a striped wire with the same color.
Pair 3
Pair4
Pair 2
Pair 1
1
2
3
4
5
6
7
8
W-G
G
W-O BL W-BL
Jack Positions
O
BR
W-BR