*BSD News Article 65023


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From: nuggets@bluesprings.in-brb.de (Lars Hentschke)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: ISDN
Date: 1 Apr 1996 12:40:33 GMT
Organization: Brandenburg Individual Network e.V.
Lines: 15
Message-ID: <4jois1$97m@bluesprings.in-brb.de>
References: <4ivo5k$jq3@sundog.tiac.net> <31553A0B.41C67EA6@FreeBSD.org> <Doy3J8.K0M.0.raindrop.seaslug.org@raindrop.seaslug.org> <315AFE74.41C67EA6@FreeBSD.org> <peter.828238209@jhome.DIALix.COM>
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Peter Wemm (peter@jhome.DIALix.COM) wrote:

: Yep. You get a bit over 15K/sec when running a 2 B channels at 128K sync,
: that's equivalent to 160,000bits/sec async.  Running a dual B channel link
: at 115.2K is only using about 70% of the maximum capacity.

There are many serial Cards, which uses 2x speed or 4x speed. 
I'm using such a Card with 230kbps an a Zyxel Elite (ISDN), which is also
capable up to 460kbps over the serial line.
Most of the external ISDN-TA's (with 2 B channels) can do more than 115200.

And Teles-Cards dont have V42bis compression over ISDN!

Lars.