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Path: utzoo!mnetor!uunet!van-bc!sl
From: sl@van-bc.UUCP (Stuart Lynne)
Newsgroups: comp.dcom.modems
Subject: Re: Telebit TrailBlazer
Message-ID: <1476@van-bc.UUCP>
Date: Sat, 24-Oct-87 02:15:48 EST
Article-I.D.: van-bc.1476
Posted: Sat Oct 24 02:15:48 1987
Date-Received: Wed, 28-Oct-87 00:47:51 EST
References: <99@sda.atexrd.UUCP> <8676@pyramid.pyramid.com> <548@mcrware.UUCP>
Reply-To: sl@van-bc.UUCP (Stuart Lynne)
Organization: Public Access Network, Vancouver, BC.
Lines: 34
Keywords: telebit trailblazer uucp

In article <548@mcrware.UUCP> kim@mcrware.UUCP (Kim Kempf) writes:
>Do these modems require any special modifications to the uucp software, or
>are they completely transparent?

More or less transparent. By more I mean that if the "S" registers are setup
appropriately, i.e. connect in PEP mode, allow UUCP, data compression on,
etc, then once the two modems see a uucp startup they will fake the the
machines at each end into thinking they are talking to each other with the
uucp "g" protocol. The modems then talk each other using Telebits
proprietary PEP protocol. 

The modems have some amount of internal buffer (seems to be at least 8-16k)
so a fair amount of buffering can take place at the sending end, which
allows the modems to always work at full speed.

By less I mean that the ideal "S" register settings for allowing outgoing
and incoming PEP uucp calls may not be ideal for dialup/dialout uucp, and/or
interactive traffic. So you may need to arrange to set the "S" registers
appropriately for different types of uses which can be annoying depending on
what system software you have.

The biggest problem with mail traffic now seems to be the inter-file pauses.
With typical small mail files, plus the X. files, you tend to have a couple
of seconds (2-6, depending on system load etc) between each file. This can
add up to an overhead which exceeds the actuall time to send the mail
message. What we need is a simple method to bundle messages together into a
"mailbag" for delivery. 





-- 
{ihnp4!alberta!ubc-vision,uunet}!van-bc!Stuart.Lynne Vancouver,BC,604-937-7532