Here is how to add Ring Central to Dubb
Here is RingCentral Documention for creating a Public App JWT
https://developers.ringcentral.com/guide/authentication/jwt/jwt-for-public-apps
Log into Ring Central Developer
developers.ringcentral.com
Then click in the top right and click Credentials
Then click Create JWT
1 Label Dubb
2 Select Production
3 Select Only Specific Apps
4 Enter Client ID iew0mp5EQbi0hmVWegaEiw
5 Click Add App
6 No Expiration
7 Click Create JWT
8 Go to dubb.com/settings/broadcast-settings
And enter the JWT you created, and the Ring Central Number