Using Open Source in a Large-Scale PBX Platform

Back in 2019, we set out to replace an aging telephony platform with a system ready for future demands. What seemed straightforward quickly turned into a complex endeavor: building for high traffic, ensuring high availability, implementing advanced telco features, and complying with regulatory constraints.

Throughout this journey, we not only tackled technical challenges but also discovered new opportunities, including the integration of AI into our platform. This talk walks through the evolution of the system, the decisions we made, and the lessons we learned along the way.