[Asterisk-Users] Connecting Asterisk to another pbx

[Alessio Focardi]

Question is: how can I connect Asterisk to another pxb using a BRI or PRI 
port ?

I would like to have Asterisk simulate an incoming telco line, providing an 
"IP upgrade" to the old pbx, is this possible ?

If yes, what hardware cards you will raccomend for E1 and quad BRI ?

I understand that my question can be a little silly for expert users ... :)

THanks for any help !

Alessio Focardi