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Path: utzoo!watmath!clyde!burl!ulysses!allegra!bellcore!decvax!vortex!lauren
From: lauren@vortex.UUCP (Lauren Weinstein)
Newsgroups: net.dcom
Subject: Re: Experience with 9600 bps on Dialup
Message-ID: <550@vortex.UUCP>
Date: Sun, 10-Feb-85 02:09:50 EST
Article-I.D.: vortex.550
Posted: Sun Feb 10 02:09:50 1985
Date-Received: Tue, 12-Feb-85 04:38:15 EST
References: <266@ttidcb.UUCP>
Organization: Vortex Technology, Los Angeles
Lines: 18

Actually, test calls from Santa Monica to Huntington, Long Island are
not a very taxing test of a modem.  Most of GTE Santa Monica is
new EAX/ESS switching, and there is a major GTE long-haul toll switching
center right there in Santa Monica as well.  This makes the
probability very high that the tests used nice, clear, digital
trunks over most of the route.

For real testing, you need to call (and be called from) areas that 
are more rural (where many Usenet sites are located, by the way) and 
farther from their local telco central offices and toll centers. 
Overall and specific path variability is usually much higher when one
or both ends of the call are in "odd" locations.  For example, I
frequently call from my "well-located" (close to central office)
Los Angeles location to Douglasville, Georgia (17 miles outside
Atlanta).  Only about 50% of the calls are usable for ordinary
1200bps 212-type data.

--Lauren--