Article View: sci.electronics
Article #7112Need phone line sp
From: Serge J. Belongie
Date: Thu, 03 Sep 1992 19:13
Date: Thu, 03 Sep 1992 19:13
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Hello, I need to know some of the specifications for phone line levels, namely: Vac, Vdc for: Phone Onhook Phone Offhook (dialtone) Phone Offhook (button pressed) Phone Onhook (ring incoming at ??hz) I have made some rather crude measurements myself with a multimeter, but they seem to change each time I measure them. I tried checking the CCITT standards ftp sites, but they seem to have all disappeared. Any help with this information would be greatly appreciated. Serge
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Newsgroups: sci.electronics Path: arc1-ca.pugleaf.net!sparky!uunet!stanford.edu!ames!elroy.jpl.nasa.gov!nntp-server.caltech.edu!sergeb From: sergeb@cco.caltech.edu (Serge J. Belongie) Subject: Need phone line sp Message-ID: <1992Sep3.191324.14987@cco.caltech.edu> Sender: news@cco.caltech.edu Nntp-Posting-Host: sandman Organization: California Institute of Technology, Pasadena Date: Thu, 3 Sep 1992 19:13:24 GMT Lines: 16