I have two question:
1- I am staging the equipments in the lab, CUCM shows unregister for T1 port but registered for FXO ports. T1 is not connected to anything. does it need to be connected to telco in order to be registered in CUCM?
2- is it possible to configure MGCP for fractional PRI?
any suggestion would be very appreciated.
Your PRI will need to be connected to the telco before it will register with CUCM. Regarding fractional PRI, this is not officially supported with MGCP, but can be accomplished. See the following link.
Hope this helps.