Path: utzoo!telecom-request Date: Fri, 24 May 1991 20:29:05 GMT From: Ben Burch Newsgroups: comp.dcom.telecom Subject: Re: Why Are *Telephone Keypads* Built Upside Down Message-ID: Organization: Analysts International Corp, Chicago Branch 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 395, Message 8 of 14 Lines: 10 I was under the impression that there was a much more reasonable reason for the DTMF pad configuration; the alphabet! The number to letter correspondences from the rotary phones could not be changed, and any geometry other than the current one would have perversely reversed the letters! Made sense to me. Ben Burch dbb@aicchi.chi.aic.com