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Article #9869

Summary of resonses to phone line crosstalk problem

#9869
From: James A. Conger II
Date: Fri, 01 Feb 1991 02:04
41 lines
2174 bytes
Well, here's the summary of the problem of the cross talk between lines:


The problem is the wiring.  Seems that "straight" 4 conductor wire isn't good
enough.  You _must_ use cable that is made of sets of "twisted pairs".  A
twisted pair rejects the signals on adjacent twisted pairs much better than
a striaght pair.

Obviously, the modular extension cords are not good either.  We have about
100 ft. of them.  Guess they will need to go to if the problem persists.

Be sure to do it right and wire all new homes with twisted pair wire--you
never know when you'll need it!


My thanks to the following people for their sharing of their knowledge:

Scott Coleman                                                    tmkk@uiuc.edu

Steve Nuchia	      South Coast Computing Services      (713) 964-2462
	"Could we find tools that would teach their own use,
	 we should have discovered something truly beyond price."
		Socrates, in Plato's Republic
-- 
\|/  Michael L. Ardai   Teradyne EDA East
--- -------------------------------------------------------------------------
/|\  ...!sun!teda!ardai (preferred)  or ardai@bu-pub.bu.edu


Jim






-- 
James A. Conger II             | jconger@magnus.acs.ohio-state.edu (prefered)
Electrical Engineering Student | conger@cis.ohio-state.edu         (work)
The Ohio State University      | conger#james#a%nersc@ccc.nersc.gov
                               | conger#james#a%nersc@lbl.bitnet
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From: jconger@magnus.ircc.ohio-state.edu (James A. Conger II)
Newsgroups: sci.electronics
Subject: Summary of resonses to phone line crosstalk problem
Summary: should have used twisted pair
Keywords: phone telephone
Message-ID: <1991Feb1.020414.18025@magnus.ircc.ohio-state.edu>
Date: 1 Feb 91 02:04:14 GMT
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