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From: vta!tom@gatech.edu (Tom Wiencko)
Newsgroups: comp.dcom.telecom
Subject: Re: A Phone Set Wiring Question
Message-ID: <14619@accuvax.nwu.edu>
Date: 12 Nov 90 13:46:58 GMT
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In article <14566@accuvax.nwu.edu> "Dave W. Hamaker" <dwh@twg.com>
writes:

>I expected single-line phones would ignore the yellow-black pair,
>unless rewired internally.  ...

A long time ago it used to be that Princess phones used the
yellow/black pair to carry a local DC voltage to power the little
light which illuminated the dial pad.  If this phone you were wiring
has some sort of light on it, that is probably what the yellow/black
pair is for.


Tom    Wiencko & Associates, Inc.   (404) 977-4515
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