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From: rdippold@cancun.qualcomm.com (Ron Dippold)
Newsgroups: comp.dcom.modems
Subject: Re: Help with v.42bis standard?  I'm confused.
Message-ID: <1991Jun3.213550.19673@qualcomm.com>
Date: 3 Jun 91 21:35:50 GMT
References: <42831@cup.portal.com>
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In article <42831@cup.portal.com> Bryan_Jones_Woodworth@cup.portal.com writes:
>I am planning on buying a modem supporting mnp5 and v.42bis, which allow it
>to transfer at speeds up to 9600 bps.  My question:
>
>Will this really go at 9600bps?  Will it connect at 9600 with USR HST modems?
>With any modem that supports v.42bis?  Help.
>
>HELP!!  How do I know which modem to buy?  Is $232 a good deal for a modem
>that supports MNP5 / V.42BIS compression??  (MNP5 at 4800bps, v.42bis at 9600)

If the files you are sending are already compressed, you will get 2400 bps,
period.  (Actually, about 2800 due to other things MNP5 does for you, but...)

If they are not compressed already you can expect maybe 2:1 with text files
using V.42bis and maybe 1.5:1 with text files using MNP5.  A packing program
would do much better.

However, it WILL speed up text communications between you and the BBS.  Not
up to 9600 bps (that's a theoretical maximum), but probably around 4800 bps.

$232 seems a bit high for this.

-- 
Standard disclaimer applies, you legalistic hacks.     |     Ron Dippold