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From: mulligan@coral.bucknell.edu
Newsgroups: sci.electronics
Subject: Help me g noise off modem line!
Message-ID: <1991Mar9.142156.3069@coral.bucknell.edu>
Date: 9 Mar 91 19:21:56 GMT
Organization: Bucknell University, Lewisburg, PA, USA
Lines: 23

I have a problem that soone out there may be able to help solve.  I use a
1200baud modem to connect a DEC VT100 terminal in my dorm room with the
main-frame on campus.  Noise on the phone line makes really strange stuff
appear on the screen sometimes.  (I can see a ~r in the last sentence that I
didn't type...line noise put it there!)  The receive data light on the modem
lights when it happens, so I feel my equipment is fine.


1.   I need info on ways to filter the "bad" stuff from the phone line.

2.   I'd really like to find a way to keep people from using call waiting on me
while I'm on the terminal.  They try to beep me, thinking it is another normal
phone call.  The beep really messes up the data stream.  I would think that
this would be harder to get around than the line noise.

I'm an E.E., so parts and construction are not a problem.  (Cost could be :) )

                                       Thanks!!!
................................................................................

Ed Mulligan                                      "What do you mean, there's
Bucknell University                               more to life than
mulligan@coral.bucknell.edu                       electronics and cars?"