For converting sip.key and sip.pem to sip.p12, try the command like this.
openssl pkcs12 -export -out sip.p12 -inkey sip.key -in sip.pem -certfile ca.pem
1. Brekeke Product Name and Version:
3.9.2
2. Java version:
1.8
3. OS type and the version:
Ubuntu 18.04
4. UA (phone), gateway or other hardware/software involved:
pjpsip
5. Your problem:
Do ...