Jitsi Meet requires an SSL certificate. This installer can generate one automatically for your using "Let’s Encrypt". This is the recommended and simplest option for most installations.
In the event you need to use a certificate of your own, you can configure its location which defaults to /etc/ssl/--domain.name--.key for the key and /etc/ssl/--domain.name--.crt for the certificate.
If you are a developer and are only looking for a quick way to test basic Jitsi Meet functionality then this installer can also generate a self-signed certificate.
_Description: Add telephony to your Jitsi meetings?
You can easily add dial-in support to your meetings. To allow this we would need your permission to create a free JaaS (Jitsi as a Service) account for you.