Jitsi trying to reach the internet through firewall when no meetings are happening

Hi everyone,
We implemented Jitsi in our organization and is working great. A big thanks to this community. We would not have been able to do it without you guys.

What we noticed, however, is that our Jitsi server trying to reach the internet, even when no meetings are happening. What could be the cause of this? Has anyone noticed anything similar?
Right now our firewall is stoping this connection, but we are worried about this.
Any ideas or anyone who can help.
Thanks and best,