Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!sdd.hp.com!mips!daver!dlb!netcom!cmilono
From: cmilono@netcom.COM (Carlo Milono)
Newsgroups: comp.dcom.lans
Subject: Re: another 10BaseT wiring question
Message-ID: <1991Apr10.035307.29375@netcom.COM>
Date: 10 Apr 91 03:53:07 GMT
References: <9736@mentor.cc.purdue.edu>
Organization: Netcom - Somewhere in the S.F. Bay Area
Lines: 35

In article <9736@mentor.cc.purdue.edu> lairdkb@mentor.cc.purdue.edu (Kyler Laird) writes:
>I saw the front of a Gateway (?) concentrator and ordered network cabling
>that terminates in modular (RJ-45) connectors.  I want this because I'll
>have ~14 connections and only 12 ports on the concentrator.  (I don't intend
>to ever use all at once.)
>
>Unfortunately, we got a David System's concentrator which uses a 50-pin telco
>connector.
>
>I'm looking for something like a harmonica adapter that would allow me to
>plug in 12 RJ-45 connectors and come out with a 50-pin telco connector.

Well, the standard jack for 10BASE-T uses 8-wires...every 10BASE-T card
*I* have ever seen is keyed for 8-wires...so I would assume that you
want an adapter that is an amphenol (50-pin) on the Equipment side and
(ahem!) 96 wires on the (ahem!) jack side with 12x8 wires splayed in
the correct order - if that is what you want: NO, I haven't seen it.

However, there are makers of 12x4 (skipping the Violet/Slate pair),
at which point you would have four-conductor mounting/patch cords and
rather unstandard wiring at the station jack, at which point you would
have to re-wire when you use the jack for something else - IMHO, a poor
choice for wire management.

A suggestion:

Run the 50-pin Amphenol to 110-like hardware and cross-connect from there
to your station field.  Leave your four-pair alone from the closet to the
jack and sleep well into the future.
-- 
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