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.

  -jm