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- Newsgroups: comp.dcom.modems
- Path: sparky!uunet!email!newton.auto.tuwien.ac.at!mjl
- From: mjl@newton.auto.tuwien.ac.at (Martin J. Laubach)
- Subject: Re: Phone line compatibility with high-speed modems (AMLs)
- Message-ID: <1992Jul28.115430.2203@email.tuwien.ac.at>
- Sender: news@email.tuwien.ac.at
- Nntp-Posting-Host: newton.auto.tuwien.ac.at
- Organization: Technical University of Vienna
- References: <1992Jul27.142255.24282@beaver.cs.washington.edu>
- Distribution: na
- Date: Tue, 28 Jul 1992 11:54:30 GMT
- Lines: 23
-
- | Apparently, an AML is an encoding box which allows you to piggyback one
- | phone line on top of another.
- | [..]
- | Does anyone know what the effects of these things are?
- | I thought that any line that carries voice at phone-company standards
- | of quality would be able to carry modem signals..
-
- The phone company over here (state monopoly, ugh!) has a similar device.
- You'll get a box installed at your place that will split up the physical
- line into two phone lines.
-
- Your main line works as before. The AML however will be modulated by
- that box onto with carrier frequency of about 20kHz before being sent
- over the line.
-
- Of course, due to the modulation and the low carrier frequency, the
- modulated line's sound quality is somewhat lower -- while this may be
- all right for voice, it can cause some problems with data transmissions.
-
- mjl
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