Path: utzoo!attcan!uunet!wuarchive!texbell!vector!telecom-gateway
From: davef@brspyr1.brs.com (Dave Fiske)
Newsgroups: comp.dcom.telecom
Subject: Re: While Phone Rings, Charges May Begin
Message-ID: 
Date: 11 Aug 89 18:52:40 GMT
Sender: news@vector.Dallas.TX.US
Organization: BRS Info Technologies, Latham NY
Lines: 23
Approved: telecom-request@vector.dallas.tx.us
X-Submissions-To: telecom@eecs.nwu.edu
X-Administrivia-To: telecom-request@vector.dallas.tx.us
X-TELECOM-Digest: volume 9, issue 290, message 8 of 13

In article , zygot!john@apple.com
(John Higdon) writes:
> In article , tanner@ki4pv.uucp
> (Dr. T. Andrews) writes:
> > ) ... green box ... tone to payphone
> > Do payphones not use out-of-band signalling?  It would seem to invite
>
> The insertion of money causes in-band signaling. It makes a little beep
> that is muted so that you don't hear it. One beep per five cents. This
> totals up on a display that the operator has in front of her (or on the
> automatic coin collection equipment.) It is a trivial matter to imitate

Not that long ago, operators had to be able to distinguish the beeps
for various coins.  Presumably, if you could throw nickels and dimes
into the slot fast enough, the operator would lose track, and you could
get your call put through for less than the correct toll.


--
"ANGRY WOMEN BEAT UP SHOE SALESMAN   Dave Fiske  (davef@brspyr1.BRS.COM)
 WHO POSED AS GYNECOLOGIST"
                                     Home:  David_A_Fiske@cup.portal.com
Headline from Weekly World News             CIS: 75415,163  GEnie: davef