I have been handed this project in the middle of the process. So, just for an FYI update:
2 locations, both currently have 3300 controllers and both have IP paging units. Its is not set up to call from location to location by extension. Both paging units are working locally correctly.
They want to page from one location to both locations at the same time through a Cisco ASA. Anyone set this up in the same way that could point me in the right direction? I haven't set up IP trunks between 2 locations yet.