asterisk users - May 2008 - Digium PRI card hi-Z for sniffing?

Does anyone know if the Digium PRI cards can be configured or modified
to have a high-impedance input on the RX pair? I would be interested in
this in order to build a bi-directional PRI audio sniffer using two
E1/T1 ports per trunk to be monitored.

Cheers
Tony
-- 
Tony Mountifield
Work: tony at softins.co.uk - http://www.softins.co.uk
Play: tony at mountifield.org - http://tony.mountifield.org

On May 1, 2008 11:39:52 am Tony Mountifield wrote:
> Does anyone know if the Digium PRI cards can be configured or modified
> to have a high-impedance input on the RX pair? I would be interested in
> this in order to build a bi-directional PRI audio sniffer using two
> E1/T1 ports per trunk to be monitored.
I looked in to this exact thing several years ago, and while I do believe that 
the hardware is capable of it (I don't have a card in front of me, but I 
believe the T1 termination is done inside the QuadFALC), the driver does not 
have this capability.

I don't think it would be impossible to add, but it would take some work,
and
please keep in mind that this was a number of years ago that I did look at 
this on the TE405P, so my memory may be a little hazy.

-A.

Hi Tony,

http://www.voicetronix.com.au/openpri.htm
Never tested, though. We used the analogue boards for monitoring, so far.

Jorge


Tony Mountifield wrote:
> Does anyone know if the Digium PRI cards can be configured or modified
> to have a high-impedance input on the RX pair? I would be interested in
> this in order to build a bi-directional PRI audio sniffer using two
> E1/T1 ports per trunk to be monitored.
>
> Cheers
> Tony
>

In article <481A9DB3.8050706 at tcc.com.pe>,
Jorge Mendoza <mendoza at tcc.com.pe> wrote:
> Hi Tony,
> 
> http://www.voicetronix.com.au/openpri.htm
> Never tested, though. We used the analogue boards for monitoring, so far.
Thanks for the link - looks interesting.

Still interested in whether Digium cards can be set to hi-Z if anyone knows.

Cheers
Tony
-- 
Tony Mountifield
Work: tony at softins.co.uk - http://www.softins.co.uk
Play: tony at mountifield.org - http://tony.mountifield.org