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From: dg@lakart.UUCP (David Goodenough)
Newsgroups: news.sysadmin,comp.dcom.modems
Subject: Re: How to speed up uucp with Telebits(only getting 800 chars/sec )
Message-ID: <612@lakart.UUCP>
Date: 10 Jul 89 23:05:51 GMT
References: <1989Jul8.042330.19789@wobble.uucp>
Followup-To: comp.dcom.modems
Organization: Lakart Corporation, Newton, MA
Lines: 22

dlu@wobble.uucp (Doug Urner):
> Sadly that is not always the case.  The best I have been able to do between
> wobble and uunet (both Trailblazer+'s and both running the link to the modem
> at 19.2) is in the same range.  The B5.00 firmware doesn't make a difference
> either.  I am able to get much better through put with local connections
> and even down to the Bay Area, but to uunet better than 900 is a real
> surprise.  Any thoughts?

Probably a very simply explanation (Anyone who knows more, feel free to correct
this). TB family modems do DAMQAM. The DAM part stands for Dynamic Adaptive
Multicarrier. Now if memory serves, there are 500+ carrier frequencies
available to a TB, of which it will use at most about 400 (?). Now, suppose
it has such a grody line that it can only use 200 of them. Can you say
lost bandwidth? There, I knew you could.

wobble.uucp is in WA, so to the Bay Area it's about 1500 miles, but maybe
twice that far to VA. .... Just some food for thought ....
-- 
	dg@lakart.UUCP - David Goodenough		+---+
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