FreePBX is an open-source web interface for managing Asterisk, the open-source telephony framework. It lets administrators set up extensions, trunks and call routing from a browser instead of editing configuration files. FreePBX is released under the GPL-3.0 licence and its code is published on GitHub. It is installed on the organisation's own server, so the telephony system runs wherever the customer chooses to host it.
FreePBX is maintained by Sangoma, which describes itself as the primary developer and sponsor of both the Asterisk and FreePBX projects. Sangoma is headquartered in Markham, Ontario, Canada, outside the EU. For a European organisation the sovereignty question therefore depends mainly on who operates the server. A self-hosted installation keeps call data under the organisation's own control, whereas a hosted service run by Sangoma would need its own assessment of data location and processing terms. FreePBX is a registered trademark of Sangoma.