Path: utzoo!telecom-request Date: Mon, 27 May 91 01:26 PDT From: John Higdon Newsgroups: comp.dcom.telecom Subject: Re: ONA Offers New Horizons for Telesleaze Reply-To: John Higdon Message-ID: Organization: Green Hills and Cows 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 402, Message 3 of 9 Lines: 31 Gordon Burditt writes: > This sounds like yet another scheme to jack up the rates for data > users. Many modems will abort the call if they detect voice on the > line. Ads will do wonders for call completion rates. Yes, indeed. Most sleazeTel LD companies use "software answer supervision" for determining when to start the clock on billing. The routines depend on voice detection to "guess" at supervision. If it hears any SIT, then the call is considered failed and no billing is done. On the other hand, if the asymetrical patterns of voice are detected, the call is assumed to be complete and charging begins. COCOTs also use this scheme. Currently, there is a major problem dealing with unavailable cellular phones. Most cellular providers do not use the SIT, but have a dry announcement stating that the called phone is not available. Any carrier not using hardware answer supervision will bill for the call. This would also occur for every call that had commercial matter between rings. And imagine this: you reach for your ringing phone after only one ring and you get a recording that says, "the person trying to reach you is still listening to an important announcement. Please hold until you are connected." John Higdon | P. O. Box 7648 | +1 408 723 1395 john@zygot.ati.com | San Jose, CA 95150 | M o o !