Unixcop published a tutorial about installing Jami on Ubuntu 20.04 or 22.04 LTS.

How to Install Jami on Ubuntu 20.04 | 22.04 LTS

In this guide, we will show you how to install Jami on Ubuntu systems Jami (formerly GNU Ring, SFLphone) is a SIP-compatible distributed peer-to-peer softphone and SIP-based instant messenger for Linux, Microsoft Windows, OS X, iOS, and Android. Jami was developed and maintained by the Canadian company Savoir-faire Linux, and with the help of a global community of users and contributors, Jami positions itself as a potential free Skype replacement. 

How to Install Jami on Ubuntu 20.04 | 22.04 LTS - Unix / Linux the admins Tutorials