Article View: sci.electronics
Article #21749Re: power from phone line
From: John Higdon
Date: Mon, 11 Dec 1989 21:15
Date: Mon, 11 Dec 1989 21:15
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In article <1989Dec9.220311.15928@phri.nyu.edu> roy@alanine.UUCP (Roy Smith) writes:
>Universal Data Systems (now part of Motorola,
>I think) used to make a nice little 1200 bps modem called the 212LP, where
>the LP meant Line Powered. We had a couple of them. The power budget must
>have been really tight because this was a real bare-bones unit. No dialer
>or auto-answer.
We used to use these on phone systems for remote programming and
diagnostics. The 300 bps version (at least) would do auto-answer just
fine. If the 1200 bps won't then one would have to assume that it takes
more power to run the 212 protocol, no?
--
John Higdon | P. O. Box 7648 | +1 408 723 1395
john@zygot.ati.com | San Jose, CA 95150 | M o o !
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!decwrl!orc!oliveb!amdahl!dlb!zygot!john From: john@zygot.ati.com (John Higdon) Newsgroups: sci.electronics Subject: Re: power from phone line Keywords: phone, power, remote Message-ID: <11301@zygot.ati.com> Date: 11 Dec 89 21:15:26 GMT References: <3542@kitty.UUCP> <548@scorn.sco.COM> <3547@kitty.UUCP> <1989Dec9.220311.15928@phri.nyu.edu> Reply-To: john@zygot.ati.com (John Higdon) Organization: Green Hills and Cows Lines: 16