Date: Sun, 2 Jul 2000 10:15:38 -0500 From: "Brandon DeYoung" <brandon@schoolpeople.net> To: <freebsd-hardware@FreeBSD.ORG>, "steinyv" <steinyv@skyweb.net> Subject: Re: RJ45 Message-ID: <003a01bfe438$6177b5c0$1301a8c0@bach> References: <4.2.0.58.20000628165443.009ef180@> <005801bfe18f$3f805090$0102a8c0@k6>
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[-- Attachment #1 --]
Hallo all,
I'm not sure if I'm breaking protocol sending an attachment to this list,
but I couldn't find the URL I'd originally got it from. This .jpg should
help clarify wiring issues:
~Brandon
----- Original Message -----
From: "Shawn Barnhart" <swb@grasslake.net>
To: <freebsd-hardware@FreeBSD.ORG>; "steinyv" <steinyv@skyweb.net>
Sent: Thursday, June 29, 2000 12:59 AM
Subject: Re: RJ45
> ----- Original Message -----
> From: "steinyv" <steinyv@skyweb.net>
>
> | I want to make my own cables. Does anyone know of a site that
> describes
> | the pin out of the connector, and what wires to use? I came across
> one
> | site, but I need to cross reference so that I could verify the correct
> | information. Im trying to make a straight through on cat 5 cable.
>
>
> Just to add my $0.02:
>
> EIA568A Color codes (1-8):
>
> White Green
> Green
> White Orange
> Blue
> White Blue
> Orange
> White Brown
> Brown
>
> EIA568B Color codes (1-8):
>
> White Orange
> Orange
> White Green
> Blue
> White Blue
> Green
> White Brown
> Brown
>
>
> Bandwidth-wasting trivia questions:
>
> What purpose does the thousands (millions?) of miles of basically unused
> copper connecting pins 4, 5, 7 & 8 in CAT-5 cables throughout the world
> serve? Does it provide extra mojo for the signal? IEEE has stock
> options in the copper mining industry? Overly optimistic gigabit
> upgrade planning? The Cat-5 standard was the closest thing to carrying a
> 100Mhz signal on four wires and the others were just part of the cabling
> spec unrelated to the 100baseT ethernet spec?
>
> We actually have some 10m drop cables with "CAT 5" printed on the
> jacketing but only four wires -- I even sacrificed one to science and
> found no unused pairs in the jacket -- I've never seen any others, and
> these carry 100FDX without complaints.
>
>
>
>
>
> To Unsubscribe: send mail to majordomo@FreeBSD.org
> with "unsubscribe freebsd-hardware" in the body of the message
>
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