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From: silver@xrtll.uucp (Hi Ho Silver)
Newsgroups: comp.sys.ibm.pc.hardware,comp.sys.ibm.pc.misc
Subject: Re: Software to transform generic 2400 modem to MNP level 5?
Message-ID: <1990Dec23.225502.10278@xrtll.uucp>
Date: 23 Dec 90 22:55:02 GMT
References: <9012221054.aa08435@PARIS.ICS.UCI.EDU>
Reply-To: silver@xrtll.UUCP (Hi Ho Silver)
Organization: Not around here, pal!
Lines: 29

In article <9012221054.aa08435@PARIS.ICS.UCI.EDU> baxter@zola.ICS.UCI.EDU (Ira Baxter) writes:
$I (like zillions of others) have a generic 2400 baud modem.  I would
$like higher throughput.  I understand that MNP protocols offer such
$without change to the basic underlying hardware.  Is there any modem
$program that implements MNP levels 1-n on such generic modems?

   I've heard of two.  I received a program called FLASHlink with my
Cardinal Technologies modem.  It does MNP levels 2, 4 and 5, though
not as well (at least on level 4) as hardware implementations.  It
does a poor ANSI terminal emulation and offers XMODEM (checksum and CRC)
and YMODEM (batch and non-batch, with the /G variants if you have MNP
enabled).  Oh, and it doesn't provide 100% error-free communications,
but all in all, it beats a 2400 bps, non-error-correcting, non-compressing
modem.

   There's another one whose name escapes me; every time the above question
gets asked, someone or other posts about it, so I'm sure you'll find out
about it.

   One thing to note is that MNP level 5 data compression, unlike V.42bis
(and possibly higher MNP levels) will not notice if your data is already
compressed, so sending compressed files (such as .ZIP archives) will actually
result in _lower_ than 2400 bps throughput in many cases.  However, for
reading news, MNP is just fine.
-- 
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