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Date:      Wed, 17 Jan 1996 16:00:05 -0600 (CST)
From:      Joe Greco <jgreco@brasil.moneng.mei.com>
To:        lists@argus.flash.net (mailing list account)
Cc:        witr@rwwa.com, freebsd-hackers@FreeBSD.ORG
Subject:   Re: Another cool hack with FreeBSD...
Message-ID:  <199601172200.QAA21195@brasil.moneng.mei.com>
In-Reply-To: <199601171710.LAA02238@argus.flash.net> from "mailing list account" at Jan 17, 96 11:10:57 am

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> > > The reason I mention this is that I finally got my Internet provider to
> > > set me up a static route with a second IP address gatewayed through it. 
> > 
> > I was wondering about load balancing several lines?  For example,
> > if I could load balance two POTS lines with 28.8 modems, I could
> > have the bandwidth of single ISDN at a fraction of the cost.  With
> > four lines I could have bonded ISDN performance, again at a fraction
> > of the cost.
> > 
> > Does anyone do this.  Can FreeBSD do this?
> 
> don't count on even close to that level of performance.  the phone companies 
> routinely use adaptive compression that highly effects v.34 modems.  where i'm
> at, it will sometimes fall back to as low as 4800 baud...  where i was at a
> few months ago, it would usually stop falling back around 21.6kbaud, so it does
> vary from site to site.  i think that with the advent of v.34 modems and the 
> availability of isdn, they may be forcing deeper fallbacks in order to get v.34
> owners to get isdn.  i would not put that kind of trick past ma bell, would 
> you?  southwestern bell for instance routinely goes to the texas puc attempting
> to charge more for modems on voice lines, so far, the puc has not given in.
> 
> brain food...

That is not true everywhere.  It is also not a reason not to pursue
something like this:  think about other serial technologies (hardwire, ISDN,
etc)...  but locally at least, you can get decent throughput at 24000 or
26.4K quite reliably.  It would be cool to get a "56K+++" link this way..

... JG



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