This article is from the FAQ, by with numerous contributions by others.
The most important part of your SLIP or PPP Internet connection is, of
course, your telephone link. Malcolm Hoar has written a modem guide
that includes information to help you troubleshoot an unstable
connection. It also has several links to other sites with more
information on modems.
http://www.best.com/~malch/comfaq.html
 
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