What are current p2p voip applications, like Skype used to be in 2003-2005?
@ton not sure if p2p, but platforms like rocket chat, matrix, Nextcloud talk should all be at least self-hostable.
What's ultimately the goal in your situation?
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!