Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!elroy.jpl.nasa.gov!lll-winken!iggy.GW.Vitalink.COM!widener!news.cs.indiana.edu!maytag!xenitec!zswamp!root
From: root@zswamp.uucp (Geoffrey Welsh)
Newsgroups: comp.dcom.modems
Subject: Re: CompuComm CSP modems 9600???
Message-ID: <19.28263B5D@zswamp.uucp>
Date: 6 May 91 17:01:44 GMT
Organization: Izot's Swamp BBS (FidoNet), Kitchener, Ontario
Lines: 20

In a letter to All, Larry Snyder (larry@nstar.rn.com ) wrote:

 >what protocol do these modems use?  Is it full duplex?

   It is definitely *not* full duplex.  The CompuCom folks state in their ads 
(quite correctly, actually) that the echo cancellation required for full 
duplex 9600 is part of what makes others' modems more expensive; USR and 
Hayes both avoided full duplex when developing their proprietary 9600 bps 
protocols to reduce costs.

   I've been told - but can't confirm, nor can I find in the propoganda 
anywhere - that the SpeedModem is asymmetrical, like the HST.  If/when we get 
one out here, I'll let you all know what I can find out about it.
 

--  
Geoffrey Welsh - Operator, Izot's Swamp BBS (FidoNet 1:221/171)
root@zswamp.uucp or ..uunet!watmath!xenitec!zswamp!root
602-66 Mooregate Crescent, Kitchener, ON, N2M 5E6 Canada (519)741-9553
"He who claims to know everything can't possibly know much" -me