Path: utzoo!utgpu!water!watmath!clyde!cbosgd!ihnp4!gargoyle!ddsw1!dnelson
From: dnelson@ddsw1.UUCP (Douglas Nelson)
Newsgroups: comp.dcom.modems
Subject: Re: USR Courier 2400 or USR Courier 2400E ?
Message-ID: <496@ddsw1.UUCP>
Date: 24 Jan 88 18:51:22 GMT
References: <21676@yale-celray.yale.UUCP> <6653@agate.BERKELEY.EDU>
Reply-To: dnelson@ddsw1.UUCP (Douglas Nelson)
Organization: Traveller's Aid, Mundelein, IL
Lines: 26


The Courier HST that I use at work has the capibility of communicating with
the Courier 2400e with the MNP/ARQ error correction protocols mentioned
earlier.  At 9600, the MNP/ARQ correction is a blessing.  Communication half-
way across the country at 9600 baud I can pick up the phone and literally
scream into it (and catch a few strange looks from fellow workers, :-)  )
and get absolutely no line noise.  The problem that occurs with the 2400e
is that the error correction slows down the baud rate to about 1800 or so,
and makes input that is staged (ie: stop-go-stop) VERY jumpy.  Althogh it
isn't too bad at 9600, at 2400 with the error checking it could easily drive
you insane.  Although I currently use the USRobotics Courier HST 9600, I used
the regular Courier 2400 (without error checking) for a long time previous
and have had excellent results.  I don't think that the errors encounted at
2400 are significant enough to account for the difference in price nor the
abnormal performance, unless you have extremely specific applications which
would require ascii or otherwise text transmission in which an error could
provide fatal.


Hope this helps.


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Douglas Nelson
dnelson@ddsw1.UUCP
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