Subject: Re: ISDN sniff
To: Wojciech Puchar <email@example.com>
From: Jukka Marin <firstname.lastname@example.org>
Date: 12/31/2002 11:35:12
On Tue, Dec 31, 2002 at 09:13:17AM +0100, Wojciech Puchar wrote:
> is it possible to sniff all ISDN traffic (generated by my phone) with ISDN
> card fit into my machine?
> i just want to be able to record my phone.
You can only "hear" one direction of the phone conversion because the ISDN
S bus has separate separate signals for transmit and receive data. Even
this requires some special software to passively capture the data from the
proper time multiplexed channel.