Jitsi TLS/SRTP and call simulation

Hello everyone,

I would like to carry out an experiment with an Asterisk server and use “Jitsi” as a softphone.

My experiment consists of a RaspberryPi with Asterisk, this server is connected to 2 laptops. Jitsi is installed on the laptops (previously “Blink”) and these phones are supposed to call each other. Sometimes encrypted sometimes unencrypted because I want to measure the performance difference between RTP and SRTP.

Can anyone help me with where to add the CA file and .pem file to Jitsi?

Another question: is it possible if e.g. ex 100 calls ex 200, both pick up and both play a file to simulate a conversation. The goal is that all conversations are the same.