Path: utzoo!news-server.csri.toronto.edu!rutgers!apple!portal!cup.portal.com!dbell
From: dbell@cup.portal.com (David J Bell)
Newsgroups: sci.electronics
Subject: Re: Help me g noise off modem line!
Message-ID: <40073@cup.portal.com>
Date: 13 Mar 91 01:12:32 GMT
References: <1991Mar9.142156.3069@coral.bucknell.edu>
Distribution: usa
Organization: The Portal System (TM)
Lines: 22

Ed, I have good news and bad news....


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

This amounts to "black magic", I'm afraid; a great deal of the effort involved
in modem or other telecommunications development is solely to eliminate the
effects of noise. We all suffer...

>2.   I'd really like to find a way to keep people from using call waiting on m
e
>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.

Here's the good news!  Most (your's, I hope) phone systems offering call
waiting have a simple code you can send at the beginning of a call (before
dialing), that turns off call waiting, for the duration of that call.
In my area, it is '*70'. Just key this before dialing the mainframe, and
you should be safe!

Dave         dbell@cup.portal.com