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ZL1ABS > TECH 29.07.09 20:31l 61 Lines 1930 Bytes #999 (0) @ WW
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Subj: RJ45 8 pin Ethernet cabling
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From: ZL1ABS@ZL1AB.#06.NZL.OC
To : TECH@WW
RJ45 8 Pin cabling
.12. How do I set up a two-computer twisted pair network?
Date: 1 Oct 1995 19:37:36 GMT
From: Charles Denny <denny@mail.utexas.edu>
[This is off topic, but it gets asked so often...]
You need to buy or build a crossover cable. The following is taken from
the
Data Communications Cabling FAQ:
10.0 Birds and Bees (Plugs vs. Jacks)
The EIA/TIA specifies an RJ-45 (ISO 8877) connector for Unshielded
Twisted Pair (UTP) cable. The plug is the male component crimped
on the end of the cable while the jack is the female component in
a wall plate or patch panel, etc. Here is the pin numbering to
answer the question, where is pin one?
Plug Jack
(Looking at connector (Looking at cavity
end with the cable in the wall)
running away from you)
---------- / ----------
| 87654321 | | 12345678 |
|__ __|/ |/_ /_|
|____| |/___|
12.2 Ethernet 10Base-T Crossover patch cord;
This cable can be used to cascade hubs, or for connecting
two Ethernet stations back-to-back without a hub (ideal for
two station Doom!) Note pin numbering in item 10.0 above.
RJ45 Plug 1 Tx+ -------------- Rx+ 3 RJ45 Plug
2 Tx- -------------- Rx- 6
3 Rx+ -------------- Tx+ 1
6 Rx- -------------- Tx- 2
I built this cable and everything works fine on my system. For more
information on the cables, refer to
http://www.cis.ohio-state.edu/hypertext/faq/usenet/LANs/cabling-faq/faq.h
tml
and for more info on Ethernet, try
http://wwwhost.ots.utexas.edu/ethernet/faq.html.
Wire 1 Blue
Wire 2 Blue/White
Wire 3 Orange
Wire 4 Green
Wire 5 Green/White
Wire 6 Orange/White
Wire 7 Brown
Wire 8 Brown/White
For Ethernet
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