[asterisk-users] Digium PRI card hi-Z for sniffing?

[Andrew Kohlsmith (lists)]

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.