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From: cbn@mace.cc.purdue.edu (Robert S. Unoki)
Newsgroups: comp.dcom.modems
Subject: Data Compression
Keywords: Compression,MNP5,V.42bis
Message-ID: <5084@mace.cc.purdue.edu>
Date: 11 Jul 90 06:12:48 GMT
Organization: Purdue University
Lines: 17

I'm currently considering purchasing a modem with data compression for my own
personal use.  However, I am unclear on exactly how the data compression works.
I understand that all compression is done at the hardware level to effectively
increase throughput  by factors of 2:1 (MNP5) or 4:1 (V.42bis).  I also realize
that modems on both ends of the connection must share the same compression 
algorithms.

I intend to purchase a 2400 modem that operates using either of the above 
compression schemes.  Does this mean that I will basically have a 4800 baud
connection using MNP5 or 9600 baud using V.42bis?  Would these be the settings
of my communications software?  

Thanks in advance...

Rob Unoki
cbn@mace.cc.purdue.edu
Programmer, C-SPAN Public Affairs Video Archives