How to integrate on-premise jitsi with Kamailio SIP server

In my project, we need to set up video conferences between on-premise jitis and Avaya XT7100.

For the Avaya devices, I have set up a SIP server running Kamailio v5.3.4. Authentication has been set up in the SIP server. SIP clients need to provide username and password to login to the SIP server. Currently, Avaya devices can successfully set up video conferences between each other.

For jitis, what should I do? Thanks!