I’ve been wanting to learn more about phone systems, so I set up a PBX server using FreePBX to start tinkering. It’s a great way to dive into the world of telephony and SIP-based communications. I’m also using an Android SIP client to connect my old Galaxy S4 test phones to the system. It’s been fun experimenting with different call setups and configurations, and I’m excited to learn more as I go.