Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!zaphod.mps.ohio-state.edu!mips!spool.mu.edu!uunet!comp.vuw.ac.nz!waikato.ac.nz!atc
From: atc@waikato.ac.nz
Newsgroups: comp.dcom.modems
Subject: Re: Using High Speed Modems
Message-ID: <1991May24.181546.3802@waikato.ac.nz>
Date: 24 May 91 06:15:46 GMT
References: <28675@uflorida.cis.ufl.EDU> <6536@vela.acs.oakland.edu> <1991May23.193607.14738@qualcomm.com>
Distribution: na
Organization: University of Waikato, Hamilton, New Zealand
Lines: 24

In article <1991May23.193607.14738@qualcomm.com>, rdippold@cancun.qualcomm.com (Ron Dippold) writes:
> In article <6536@vela.acs.oakland.edu> rdthomps@vela.acs.oakland.edu (Robert D. Thompson) writes:
>>	Do modems with V.42 compression cause compressed files (e.g.
>>	PKZIP, LHARC, etc...) to become effectively larger when
>>	transferred?  In other words, is there negative compression
>>	when transferring a compressed file via V.42?
> 
> First, V.42 is only error correction, V.42bis is compression.  However, V.42
> is smart enough to realize when the compression is causing the data to expand
> and will send the data un"compressed".
> 
So do all compressed files expand or only some?
i.e. if i'm only interested in sending compressed files, then is v42bis a waste
of time?

Your answer keenly awaited as I have on order a v22bis/v42bis modem.

-- 
Andrew Chambers
Computer Services
University of Waikato
New Zealand

ATC@WAIKATO.AC.NZ