X100P Not sensing Ring Event

I line in Athens, Greece And I am trying to connect my home AsteriskPBX with the PSTN. I have just bought a X100P card - install It and trying to receive and make calls.
I have used all the information available from internet - forums and managed to install corectly the X100P Card (I think so).
Zaptel - Zapata - Extentions etc
When starting and monitoring Asterisk CLI> I am not getting any errors or warnings. But I am not able to capture ring events from the PSTN.
Can anybody give me a hint ?
Is there any test / debug utility to check the installation - procedure ?

Iraklis :open_mouth: