Jitsi in a remote area

I have a need to run WebRTC in a remote area with no cell signal. I’d like to set up a Jitsi server on a desktop/laptop and the nearby mobile devices connected to that local server in master mode via wifi. No backend internet connection to the server and no cell signal to the mobile devices.

Possible? This would be for 10-ish mobile clients and voice only (maybe text too but NO video).

Should be possible, but you probably need to configure the certificates in the mobile devices trust store by hand since you’re likely to use self-signed certificates in that scenario.