Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!rutgers!texbell!vector!telecom-gateway From: tad@ssc.UUCP (Tad Cook) Newsgroups: comp.dcom.telecom Subject: Re: Precise Dial Tone & A Tone of the Past: No-Such-Number Message-ID: Date: 30 Sep 89 00:22:44 GMT Sender: news@vector.Dallas.TX.US Organization: very little Lines: 20 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 420, message 11 of 11 Regarding precise dialtone, it's true...the older dialtone was rich in harmonics, and interferes with a tone receiver trying to detect the first DTMF digit. I used to work for a company that made tone-to-pulse converters, and one of the requirements was that they be installed in offices with precise 350+440Hz dialtone, rather than the electromechanical motor driven monsters that were commong in offices without DTMF. Customers calling in with problems were usually asked about precise dialtone, and the wags around the office (Teltone) used to joke about the customers who said: "Hell yes it's precise dialtone! I checked it with a stobe light just last week!" Tad Cook tad@ssc.UUCP KT7H @ N7HFZ MCI Mail: 3288544