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From: butler@stsci.EDU (Lee A. Butler)
Newsgroups: comp.dcom.modems
Subject: Re: Telebit TrailBlazer
Message-ID: <54@stsci>
Date: Sat, 24-Oct-87 18:23:52 EST
Article-I.D.: stsci.54
Posted: Sat Oct 24 18:23:52 1987
Date-Received: Mon, 26-Oct-87 04:49:12 EST
References: <2451@umix.cc.umich.edu>
Organization: Space Telescope Science Institute, Baltimore, MD 21218
Lines: 19

in article <2451@umix.cc.umich.edu>, honey@umix.cc.umich.edu (Peter Honeyman) says:
> 
> the trailblazer requires no modifications to uucp.
> 
> 	peter

But if you want to take advantage of the trailblazer's added speed, you want
to use a transfer protocol that will allow large (1K-2K) data packets and a
sliding-window ack scheme.  These modems take about 2 sec to turn the
transmission around.  This would mean a 2 sec wait for the transmission
of the ACK to every packet if you didn't have sliding-window ACK.  The
data compression done in some of these modems makes it beneficial to
transmit data in large packets (since the modem is doing the re-trans
you don't pay as high a penalty for this as you might think).
-- 
Lee A. Butler				butler@stsci.arpa | butler@brl.arpa
Space Telescope Science Institute	Usenet: {noao,nrao1}!stsci!butler
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Baltimore, MD 21218			Phone: (301) 338-4531