Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!mips!synoptics!bionet!hayes.ims.alaska.edu!accuvax.nwu.edu!nucsrl!telecom-request
From: hoptoad!kumr!pozar@uunet.uu.net (Tim Pozar)
Newsgroups: comp.dcom.telecom
Subject: Re: Trivia Question About Butt Sets
Message-ID: <14583@accuvax.nwu.edu>
Date: 11 Nov 90 20:32:03 GMT
Sender: news@accuvax.nwu.edu
Reply-To: Tim Pozar <hoptoad!kumr!pozar@uunet.uu.net>
Organization: Late Night Software (San Francisco)
Lines: 15
Approved: Telecom@eecs.nwu.edu
X-Submissions-To: telecom@eecs.nwu.edu
X-Administrivia-To: telecom-request@eecs.nwu.edu
X-Telecom-Digest: Volume 10, Issue 810, Message 6 of 11


In article <14551@accuvax.nwu.edu> rees@citi.umich.edu (Jim Rees)
writes:

>I've used electrician's terms here.  Telephones are actually balanced
>line, so there isn't that big a distinction between tip and ring, at
>least not at the subscriber's end.

    Other than battery polarity?  Some sets will not power the DTMF
encoder unless they are wired in the proper polarity.


Tim
uunet!hoptoad!kumr!pozar Fido: 1:125/555 PaBell: (415) 788-3904
  USNail:  KKSF-FM / 77 Maiden Lane /  San Francisco CA 94108