Xorcom device

Hi all,

I have a Xorcom XR1-30 ( xorcom.com/catalog/xr1-30.html ) that has a trixbox inside.
This equipament has 6 FXS and 2 FXO ports.
The trixbox is version 2.8 (asterisk ver. 1.6)
How can I detect analog ports at system?
I cannot recognize the ports to install analog phones.
thanks in advance