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Date:      Thu, 31 Oct 1996 15:54:32 +0100 (MET)
From:      Christoph Kukulies <kuku@gilberto.physik.rwth-aachen.de>
To:        gjennejohn@frt.dec.com
Cc:        questions@freebsd.org, current@freebsd.org, isdn@muc.ditec.de
Subject:   Re: Any ISDN-BRI cards work under FreeBSD?
Message-ID:  <199610311454.PAA05342@gilberto.physik.rwth-aachen.de>
In-Reply-To: <9610311240.AA12672@cssmuc.frt.dec.com> from "garyj@frt.dec.com" at "Oct 31, 96 01:40:07 pm"

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> NOTE: I added current to the Cc for wider distribution in the hope
> that someone will positively respond to my question below. I added
> the isdn mail-list because it may be of general interest to the people
> on that list.
> 
> grog@lemis.de writes:
> > garyj@frt.dec.com writes:
> > >
> > > brian@mediacity.com writes:
> > >>  I'm currently using external BitSurfer Pros, but would like to
> > >>  recover the bandwidth that is lost to the serial port 115200 bps limit
> > >>  and the ASYNC/SYNC conversion.
> > >
> > > even with a card you can't do that because the current ISDN code does
> > > not support channel aggregation. It's one of the things which are planned
> > > for the (who knows how distant) future.
> > 
> > Still, you could have mentioned:
> > 
> > In Germany and other parts of Europe, the Teles S0 and compatible
> > boards are supported.  They *should* work in the US, though nobody's

I'd really be surprised if these cards would work at 56Kb/s and
if they's connect physically.


> > done it yet.  They currently only run single channel connections (you
> > can have two different connections to different destinations).  The
> > theoretical maximum throughput is 8 kB/s (64,000 bps), which is
> > somewhat less than the theoretical maximum of the 115.2 kbps lines
> > (11.52 kB/s).

Why do you divide by 8 in the one case and by 10 in the other?

> > 
> 
> this is true, but since he wanted to use all the available bandwidth
> and it won't work with the current code I thought he should be informed.
> 
> I'm going to be in California from Nov 7 til Nov 28 and would be more
> than willing to bring a pair of (ISA) cards from Germany and try to get the
> bisdn code working in the US. I already asked Jordan, but he can't
> accomodate me. Is there anyone in the Bay Area who has ISDN and a pair
> of boxes who'd be willing to make them available for this ?
> 
> 
> 
> ---
> Gary Jennejohn				(work) gjennejohn@frt.dec.com
> 					(home) Gary.Jennejohn@munich.netsurf.de
> 					(play) gj@freebsd.org
> 
> 
> 

--Chris Christoph P. U. Kukulies kuku@gil.physik.rwth-aachen.de



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