Path: utzoo!telecom-request
Date: Sat, 22 Jun 1991 23:32:25 GMT
From: bruce@pixar.com 
Newsgroups: comp.dcom.telecom
Subject: Re: Modification of Ringback Tone by Subscriber Apparatus
Message-ID: <telecom11.483.4@eecs.nwu.edu>
Organization: Pixar -- Point Richmond, California
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In a PBX with DID trunks, what happens if something breaks and the PBX
never does return supervision? Does a two-way audio path exist? Will
the connection stay up as long as desired, or time out?


Bruce Perens