Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!elroy.jpl.nasa.gov!ncar!csn!boulder!tcr!a68k!Reid_Bishop
From: Reid_Bishop@a68k.UUCP (Reid Bishop)
Newsgroups: comp.sys.amiga.datacomm
Subject: Re: What's the difference between a Supra MNP and MNP-plus?
Message-ID: <Reid_Bishop.3216@a68k.UUCP>
Date: 17 May 91 14:30:24 GMT
Organization: The Arvada 68K BBS
Lines: 40

In a message dated Fri 17 May 91 05:50, Billsey!nesbbx@agora.uucp (bill Sey
wrote:

 BS> But there's a difference on precompressed files... With MNP5, you get an
BS> actual *slowdown* on
 BS> precompressed files, since it doesn't know enough to shut itself off

I disagree here.  In theory, this _should_ be true, but tests I have
conducted prove just the opposite.  My BBS has MNP-5 modems on all lines, and
tests show that file transfers of compressed files  (typically LHArced
files...) are _always_ faster using MNP-5 than not.  My BBS is locked at 9600
baud regardless of the connect rate, so BBS output is always constant.  If I
call my BBS with straight 2400 baud, I get around 240 CPS under ideal
conditions.  If I call using MNP-5, I get closer to 250-260 CPS, and
sometimes better when downloading LHarced files.

In addition, I used to run a straight 2400 baud modem on the FIDO line, and
transfers never went over 240 CPS.  Now, they go well over 250 CPS, again
these files are LHarced.  These transfers are with a USR DS modem on the
other end.

In a sense, MNP5 _can_ and _does_ improve transfer rates on compressed files.
 
 BS> You'll get that with either modem, although if you're transfering
 BS> compressed files, you'll want to disable the MNP5.

I would run tests before actually disabling MNP5.

-- Via DLG Pro v0.97b


~~~~~~~~~~~~~ Somebody's gotta fight for the AMIGA!! ~~~~~~~~~~~~~~~~~

   Reid Bishop-  Customer Support & Programming, M.V. Micro

   UUCP:  boulder!tcr!a68k!Reid_Bishop          [Reid Bishop]

   FIDO:  (1:104/224)

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