Open Relay Project also works with Nextcloud talk, follow the instructions below to learn how to configure Nextcloud talk to work with Open Relay.

Nextcloud talk require the auth-secret-authentication so we have to use the Open Relay Project's TURN Server with auth-secret-authentication. Use the turn server url staticauth.openrelay.metered.ca with Nextcloud talk and turn secret: openrelayprojectsecret.

Go to Nextcloud-> Settings -> Talk and under TURN Servers press the + button
Then select turn:only
Under turnserver:port enter staticauth.openrelay.metered.ca:80
Under secret enter openrelayprojectsecret

Add another entry for port 443

Select turn:only
Under turnserver:port enter staticauth.openrelay.metered.ca:443
Under secret enter openrelayprojectsecret