Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!sdd.hp.com!hp-pcd!hplsla!ericb
From: ericb@hplsla.HP.COM (Eric Backus)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: Questions about Modem with V.42 bis and MNP5
Message-ID: <13000014@hplsla.HP.COM>
Date: 4 Jun 91 17:01:36 GMT
References: <49961@ut-emx.uucp>
Organization: HP Lake Stevens, WA
Lines: 19

> The question was: Can someone tell me what is difference between version
>                   v.42 bis and MNP5 of a modem and which version is better?

I believe that v.42bis provides better data compression and therefore
faster data rates.  The v.42bis modem probably also does MNP5 (at least,
mine does), and probably costs a little more.  Remember that both ends of
the connection must have v.42bis or MNP5 to make use of them, and you will
probably find more MNP5 modems out there than v.42bis.  To make much use of
either v.42bis or MNP5, you will have to have communication software which
can talk to the modem at perhaps 9600 baud, so that when the data coming in
at 2400 baud is uncompressed, you can read it in fast enough.  You'll have
to decide for yourself if the extra expense of v.42bis is worth it.

P.S. I have an ATI 2400etc/i (I got it with my Gateway 2000 system),
which does v.42bis and MNP5, and it works great.
--
				Eric Backus
				ericb%hplsla@hplabs.hp.com
				(206) 335-2495