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From: dave%westmark@uunet.uu.net (Dave Levenson)
Newsgroups: comp.dcom.telecom
Subject: Re: New Double-jack Wall Plates, Crosstalk?
Message-ID: <8499@accuvax.nwu.edu>
Date: 31 May 90 16:58:46 GMT
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X-Telecom-Digest: Volume 10, Issue 403, Message 4 of 11


In article <8435@accuvax.nwu.edu>, peter@ficc.ferranti.com 
(Peter da Silva) writes:

> We just had new phone service hooked up, two lines: one for data, the
> other for voice...

> I presume they have hooked red-green up on one line, and yellow-black
> on the other ...  if they did this I should expect some  crosstalk. 
> Has anyone else seen this setup? If there is a crosstalk  problem, 
> what should I do?  

If they really used the two pairs available in standard quad, as you
suggest, then you will probably experience crosstalk, if there's any
significant cable run.  It isn't caused by sharing a duplex jack, but
by the cable.

For two-line service, they should use a cable with two (or more)
twisted pairs.  If they did, they would probably have connected one
line to the blue-white pair and the other to the orange-white pair.
If they did that, you shouldn't experience crosstalk, regardless of
the connectors used.


Dave Levenson			Voice: 201 647 0900  Fax: 201 647 6857
Westmark, Inc.			UUCP: {uunet | rutgers | att}!westmark!dave
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[The Man in the Mooney]