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Date:      Mon, 4 Nov 2002 09:33:56 +0200 (EET)
From:      Juha-Matti Liukkonen <jml@cubical.fi>
To:        Oliver Velten <ovelten@gmx.de>
Cc:        Andrew Gordon <arg-bsd@arg1.demon.co.uk>, <freebsd-isdn@freebsd.org>
Subject:   Re: multilink affects voice connections
Message-ID:  <20021104093129.W4874-100000@skitso.cs-intra.net>
In-Reply-To: <3DC427FE.C97298B0@gmx.de>

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Hi,

we experienced a similar problem with el-cheapo Winbond based adapters.
The problem went away when we tweaked BIOS PCI latency timer settings. The
cards were very sensitive to I/O timing. See what BIOS settings you have
available -- adjusting them might work for you as well.

Br,
Juha

On Sat, 2 Nov 2002, Oliver Velten wrote:

> Andrew Gordon wrote:
> >
> > On Sat, 2 Nov 2002, Oliver Velten wrote:
> > >
> > > I user i4b with FreeBSD 4.6 and userland ppp. Everything works fine as
> > > long as I don't add a second link.
> > > When I add a second link with the clone command the link is brought up
> > > and evereything seems ok. When I close the second link with 'link link1
> > > close' and I receive a voice call with my ISDN phone the connection is
> > > very bad. The person which is calling me does only hear some noisy
> > > sounds but I can understand the person very well.
> >
> > Which hardware/driver are you using?  I used to see this with a Fritz!PCI
> > v1 card (ipfi driver), and the only solution was to switch to a different
> > type of card (this was not an individual hardware fault - I tried several
> > Fritz!PCI cards, and I was not the only person having this problem, there
> > was some discussion on the mailinglists about 2 years ago).
> >
>
> The driver I use is:
> # AVM Fritz PCI
> device          ifpi0
>
> and I use a Fritz!PCI version 1
>
> I used this card with Windows and Linux without problems using channel
> bundling. So I think it's definitive a software problem.
>
> The only posibility is to change the card?
>
> Bye,
> 	Oliver
>
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Cubical Solutions Ltd, Juha-Matti Liukkonen
Phone: +358 40 5280142
Email: jml@cubical.fi


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