Path: utzoo!utgpu!water!watmath!clyde!rutgers!uwvax!puff!ttang
From: ttang@puff.cs.wisc.edu (Theodore Tang @ Univ of Wisconsin-Madison)
Newsgroups: comp.dcom.modems
Subject: Re: MNP make for a faster modem?
Summary: Depends on MNP level, MNP 5 has data compression...
Keywords: MNP
Message-ID: <1390@puff.cs.wisc.edu>
Date: 25 Jan 88 16:36:25 GMT
References: <3027@killer.UUCP> <6678@agate.BERKELEY.EDU>
Organization: U of Wisconsin CS Dept
Lines: 22

In article <6678@agate.BERKELEY.EDU>, chapman@eris (Brent Chapman) writes:
> It's hype.  MNP is an error detection and correction protocol.  A modem running
> at 2400 baud with MNP will probably actually have slightly (_very_ slightly)
> lower throughput than without MNP, because of the extra bits needed for the
> protocol.  I happen to think it's worth it, though, because of the error
> correction.
> 
> I spend lots of time dialed into various systems in Berkeley (which has _lousy_
> line quality) using a USRobotics Courier 2400e MNP modem at home (I'm using it
[ basic principle of MNP description removed ]
> -Brent


Brent,

Actually this depends on which level of MNP you have, which is 3 with the USR
Coursier 2400e.  I have USR's HST which has MNP 5 which claims to have a
throughput of up to 19200 baud (my modem is rated normally w/o MNP at 9600)
using hardware data compression under idea situations (ie text).

Ted Tang
ttang@puff.wisc.edu.UUCP