Article View: sci.electronics
Article #4789Re: "Caller ID" signal detection.
From: Bill White
Date: Thu, 31 May 1990 18:47
Date: Thu, 31 May 1990 18:47
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In article <1990May22.151642.18729@utzoo.uucp> henry@utzoo.uucp (Henry Spencer) writes: > >You will also need to sign up for Caller ID, and pay whatever monthly fee >the local phone company feels like charging for it. Assuming, that is, >that it's available in your area. Stories claiming that (a) it is available >everywhere, and/or (b) it is available free, are just that: stories. Old >switching gear can't do it at all, and you better believe the phone company >wants money for it. I've heard (from several people) of "homebrew" caller-ID boxes that worked entirely by themselves, ie no phone company modifications were needed. I seem to recall that they had something to do with sending certain frequencies. Or is this a myth? If so, it's a very persistent one. Also, does anyone know what the fourth wire in standard telephone hookups is for? -- | Bill White Internet: bwhite@oucsace.cs.ohiou.edu | | BUCY'S LAW: | | Nothing is ever accomplished by a reasonable man. |
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!uwm.edu!zaphod.mps.ohio-state.edu!tut.cis.ohio-state.edu!att!oucsace!bwhiteReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!uwm.edu!zaphod.mps.ohio-state.edu!tut.cis.ohio-state.edu!att!oucsace!bwhite From: bwhite@oucsace.cs.OHIOU.EDU (Bill White) Newsgroups: sci.electronics Subject: Re: "Caller ID" signal detection. Summary: Do "homebrew caller ID boxes" really exist? Message-ID: <1417@oucsace.cs.OHIOU.EDU> Date: 31 May 90 18:47:44 GMT References: <235@ulticorp.UUCP> <2387@rsiatl.UUCP> <1990May22.151642.18729@utzoo.uucp> Organization: Ohio U, home of the mighty Hocking River! Lines: 23