Path: utzoo!telecom-request Date: Wed, 5 Jun 91 11:44:05 PDT From: "John R. Covert 05-Jun-1991 1440" Newsgroups: comp.dcom.telecom Subject: Re: Modification of Ringback Tone by Subscriber Apparatus Message-ID: Organization: TELECOM Digest Sender: Telecom@eecs.nwu.edu Approved: Telecom@eecs.nwu.edu X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@eecs.nwu.edu X-Telecom-Digest: Volume 11, Issue 427, Message 3 of 9 Lines: 23 >> To answer your question: I heard the double-ring when calling the >> "Management Services" department at Toronto City Hall. > The double ring will indicate that the destination has answered your > call on its own equipment. The real implication of this is that you > are now being billed for the time that you are listening to ringing. Tom, for the Management Services department at Toronto City Hall, this is not the case. As has already been explained, when a PBX has DID trunks, audible ringing tone is returned to the caller directly from the PBX, which can ring any way it pleases. This earlier response was correct, and yours was incorrect. Specifically, 416 392-7715 rings with double ring, but you are not billed until someone answers. I have verified this from a trunk which provides positive indication of answer supervision. john