Hi, I have connect asterisk with avaya over isdn trunk and PC cart. Everythink is OK. 
But I need to connect it over H323 trunk (CLAN IP - Asterisk IP) Can anybody help me ?
And I have some trouble with connect Two asterisk with IAX2, I search on the inet more forum but they not work on my PC. How can I connect they ? Please some extension.conf and iax.conf step by step for beginner ?
Thank you for your time and sorry for my english… 