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Date:      Thu, 10 Oct 2002 07:23:40 +0200
From:      Ignatios Souvatzis <is@beverly.kleinbus.org>
To:        Guido van Rooij <guido@gvr.org>
Cc:        freebsd-isdn@freebsd.org
Subject:   Re: sniffing voice calls
Message-ID:  <20021010072340.A15641@marie>
In-Reply-To: <20021009150346.GA62592@gvr.gvr.org>; from guido@gvr.org on Wed, Oct 09, 2002 at 05:03:46PM %2B0200
References:  <20021009150346.GA62592@gvr.gvr.org>

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On Wed, Oct 09, 2002 at 05:03:46PM +0200, Guido van Rooij wrote:
> Would it be possible to use the i4b software to sniff the isdn bus
> and thus record phone conversations that are taking place (from
> a switch on the same bus).

I guess, no, unless you use a special cable and two cards (you won't be=20
able to hear your local talker otherwise). Some of the monitor commands
should be able to be used oar adapted for this.

I guess, however, that monitoring usage of B-Channels (and maybe even their=
=20
usage type), and monitoring the remote talker, should be possible without a
normal cable. Hoever, a bit of software change will be necessary, I guess.

Regards,
	-is
--=20
seal your e-mail: http://www.gnupg.org/

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