Path: utzoo!attcan!uunet!wuarchive!texbell!vector!telecom-gateway
From: toto!bill@apple.com (Bill Cerny)
Newsgroups: comp.dcom.telecom
Subject: Re: AUTOVON Preemption
Message-ID: 
Date: 11 Aug 89 12:59:24 GMT
Sender: news@vector.Dallas.TX.US
Organization: Little 3B1 on the Prairie, St. Marys, KS
Lines: 19
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 10 of 13

In a recent Telecom Digest article, wales@cs.ucla.edu (Rich Wales) writes:

  [description of AUTOVON P,I,F,FO keys]
> By pressing one of these keys before dialing a number -- and
> assuming that your phone line had authorization to invoke that particu-
> lar precedence -- the Autovon system would automatically disconnect any
> call in progress of *lower* precedence in favor of your call.  (I'm not
> sure whether the disconnected party got any kind of notification of why
> he had suddenly gotten cut off.)

There is a one second preemption tone that is applied to your circuit
at the time your circuit is robbed.  This typically results in calling
the AUTOVON operator and attempting the call again at a higher
precedence.  Preemption gets so bad during peak hours, some folks place
'Priority' precedence calls as a matter of habit.  Sometimes it's hard
to resist the temptation ...  8-)
--
Bill Cerny
bill@toto.uucp   	"I'm gone to San Diego in my mind."