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Path: utzoo!linus!philabs!cmcl2!floyd!clyde!ihnp4!ihldt!jhh
From: jhh@ihldt.UUCP (John Haller)
Newsgroups: net.dcom
Subject: Re: Anyone know FCC regulations?
Message-ID: <2003@ihldt.UUCP>
Date: Mon, 26-Sep-83 10:31:44 EDT
Article-I.D.: ihldt.2003
Posted: Mon Sep 26 10:31:44 1983
Date-Received: Wed, 28-Sep-83 06:50:00 EDT
References: <302@pucc-h>
Organization: BTL Naperville, Il.
Lines: 22

The reason that nothing besides TelCo installed phones are not
permitted on party lines is not because of getting off the line
for emergencies, it is for both receiving calls and determining
the originating party for billable calls.  I do not know all
the specifics of how its done, and I probably couldn't say if I
did, but it works something like this:

There is a special form of ringing for party lines, depending
on which of the parties is being called.  If the modem was
in auto-answer mode, it would pick up both your calls and
those of your party.  Since only the TelCo knows how it hooked
up the phone, you couldn't tell your modem which ones to pick up.

The other problem is that the TelCo cannot determine which
of the parties placed a (long distance) call when it is dialed
by other than the TelCo installed phone.

The above seem to eliminate all auto-answer modems, plus
all `keyboard dial' modems.  I don't know if any direct connect
modems would meet FCC regulations for party lines.

			John Haller