Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!brl-adm!adm!G.MDP@score.stanford.edu From: G.MDP@score.stanford.edu (Mike Peeler) Newsgroups: comp.sys.misc Subject: Re: Pending FCC ruling threat to modem users Message-ID: <2067@brl-adm.ARPA> Date: Wed, 31-Dec-86 02:36:00 EST Article-I.D.: brl-adm.2067 Posted: Wed Dec 31 02:36:00 1986 Date-Received: Wed, 31-Dec-86 05:36:07 EST Sender: news@brl-adm.ARPA Lines: 18 In article <14178@amdcad.UUCP> phil@amdcad.UUCP (Phil Ngai) writes: >I don't think there are any long distance carriers who care, at least, >that I have heard of. And that is where things like echo suppression >and TASI come into play. Right. Echo suppression does show, however, that data calls must be detectable... For those who don't know what we're talking about, there's a little device on long-distance lines called an echo-suppressor that briefly cuts off your signal so you don't get an echo, which telephony research has found tends to be a bit unsettling to the person speaking. On a data call, this loss of signal tends to be interpreted as carrier drop, so naturally there's another little device called an echo-suppressor suppressor. The moral is, when you make a data call, TPC knows... -------