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- From: naddy@mips.ruessel.sub.org (Christian Weisgerber)
- Newsgroups: comp.dcom.modems
- Message-ID: <H.eg.iyrX2dQToKw@mips.ruessel.sub.org>
- Organization: My Individual Private Site
- Subject: Re: Why the reliabilitiy problem?
- References: <1993Jan18.203624.10656@news.acns.nwu.edu>
- Reply-To: naddy@mips.ruessel.sub.org
- X-Software: HERMES GUS 1.10 Rev. Dec 18 1992
- Date: Sat, 23 Jan 1993 01:34:26 CET
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- In <1993Jan18.203624.10656@news.acns.nwu.edu>, Adam Lasnik writes:
-
- > Anyone have any ideas why today's modems seem to be so problematic... and
- > better yet, what we can do about this?
-
- Okay, I'm going to get lots of flames for this but here it goes.
-
- 1. "Today's modems" are generally V.32bis modems. As much as a common
- standard may benefit to the end user it can do a lot of damage if it's
- bad. V.32bis isn't necessarily bad but it is *very* sensitive to line
- noise. Proprietary modulatiosn like HST and PEP do much better there and
- provide a quite robust performance.
-
- 2. Most new, cheap V.32bis modems on the market are based on Rockwell's
- RC144DP data pump. Tony Zuccarino won't like this comment but the
- RC144DP sucks. It seems to have massive problems with setting up proper
- echo cancellation on anything but the most perfect lines. Flaky as hell.
-
- What to do about it? Get a nice reliable expensive modem from USRobotics
- or Telebit. If you don't care for proprietary modulations at all and/or
- want to spend even more money, go for Motorola, AT&T Paradyne, Racal
- etc. Essentially this means: don't buy cheap.
-
- --
- Christian "naddy" Weisgerber, Germany naddy@mips.ruessel.sub.org
-