I have seen a return on investment with FreePBX; for example, the musical instruments group saved over $30,000 a year by moving from Cisco to FreePBX for their licensing.
FreePBX enhances customer service through call routing, enabling cost-effective remote solutions, and benefits organizations by saving up to $30,000 annually. It supports up to 30 agents, integrates third-party phones but occasionally lacks adequate security and call data transparency. The absence of a drag-and-drop interface and rare high call volume outages might affect usability, yet FreePBX remains a flexible option for small call centers seeking resilient VoIP capabilities.