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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.ecn.uoknor.edu!paladin.american.edu!zombie.ncsc.mil!newsgate.duke.edu!news.mathworks.com!newsfeed.internetmci.com!news.emeraldis.com!david From: david@emeraldis.com (David G. Cannon) Newsgroups: comp.unix.bsd.bsdi.misc Subject: Re: Modem Init String Date: Thu, 01 Aug 96 17:10:38 GMT Organization: Emerald Internet Services Lines: 30 Message-ID: <4tqpd1$1k9@jade.emeraldis.com> References: <Pine.BSI.3.93.960801085010.10142o-100000@babel.magic.fr> NNTP-Posting-Host: david.emeraldis.com Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Newsreader: News Xpress 2.0 Beta #2 In article <Pine.BSI.3.93.960801085010.10142o-100000@babel.magic.fr>, Edouard CORREIA <ded@magic.fr> wrote: > Hi, > why should I set speed buffering (lock DTE rate with AT&Q6 on Rockwell > chipset-based modems) as specified in the lizard book for dialin connections? > I would like to optimize my modem connection by setting AT%C3\N3 (V42 bis & > MNP5) to make compression and error correction avalaible but it disable speed > buffering (AT&Q5). Does it disturb BSDI? > > Thanks. I'm using "&Q5" rather than "&Q6" even though the manual may suggest "&Q6". We've not had any problems at all. The performance seems to be very good. The only important thing you must keep in mind with this setting is a customer's login script. With "&Q5", you do not have to prod the terminal with a carriage return to get to the login prompt. It goes directly there. If you have an initial carriage return right after the modems connect, it will skip login: and go to Password: and then send the username to the wrong prompt. You get the idea. With "&Q6", on the other hand, you have to send a carriage return first, in order to reach the login: prompt. The main thing is that you need to decide what you are going to use now, and stick with it. It would really be a pain and nightmare to have to force everyone to change there login scripts. Here's the string we use: AT E0 M0 S0=1 &K3 &C1 &Q5 &W I am curious to know why they suggested "&Q6" in the book, and what advantages it may have over the other, if any. Hope this helps. David G. Cannon