Path: utzoo!utgpu!utstat!jarvis.csri.toronto.edu!mailrus!b-tech!zeeff
From: zeeff@b-tech.ann-arbor.mi.us (Jon Zeeff)
Newsgroups: comp.dcom.modems
Subject: Re: Microcom's misleading modem ad
Keywords: telebit trailblazer, V.42, uucp, compress
Message-ID: <9342@b-tech.ann-arbor.mi.us>
Date: 13 May 89 14:39:24 GMT
References: <28111@cci632.UUCP> <1937@edison.GE.COM> <534@visdc.UUCP>
Reply-To: zeeff@b-tech.ann-arbor.mi.us (Jon Zeeff)
Organization: Branch Technology Ann Arbor, MI
Lines: 16

>The TB+ is the modem of choice for uucp(1) communication because the

>was received correctly.  In this way, subsequent packets can be
>transmitted immediately.  All other modems require that the packet be
>verified by the computer running in the slave role.  If is was received
>correctly, the acknowledgement must then be transmitted back to the
>master before a subsequent packet can be transmitted.  This requires a
>lot of time and is required even if the data are transmitted error free

This is incorrect.  Uucp sends multiple packets before needing an 
acknowledgement.  If uucp used larger packets, it would work fine (ie, 
have good performance) on these other modems.

-- 
  Jon Zeeff			zeeff@b-tech.ann-arbor.mi.us
  Ann Arbor, MI			sharkey!b-tech!zeeff