An open source telephone system, also known as an open source PBX (Private Branch Exchange), is a software-based solution that allows organizations to manage their phone systems using open source software. Unlike traditional PBX systems that rely on proprietary software and hardware, open source PBX systems are built on open source platforms, giving users the freedom to customize and modify the system to meet their specific needs.
Open source telephone systems offer several advantages over traditional PBX systems. They are typically more affordable, as users do not need to purchase proprietary software or hardware. They are also more flexible and scalable, as users can easily add or remove features and users as needed. Additionally, open source telephone systems are more secure, as they are not tied to a single vendor and can be updated regularly with the latest security patches.