Jami Docs:

In the past some questions regarding metadata have been already answered: jami-project#788 (closed)

However since Swarm and group chats are now coming it would be great if the docs contain detailed information about metadata if you use one or all Jami servers (Page: https://jami.net/why-is-jami-truly-distributed/ and jami-project#765 (closed))

Detailed information about metadata: https://getsession.org/blog/metadata-zero-privacy and https://threema.ch/en/blog/posts/metadata

For example what data (IP address, call details (call duration, Jami users (/usernames) ) are stored how long if you use a stun- or turn- and/or Jami name server of Savoir-faire Linux.

And if it is possible to track individual users using metadata (I think all calls / text messages are e2e-encrypted so you should not be able to view content of video calls and/ or messages).