A PBX (private branch exchange) is a phone system used within a company or an organization. It allows internal communication between employees as well as external communication with customers or clients. The real PBX is a physical device that is installed on-premises and manages calls, routing them to the appropriate extensions or external lines. It can also provide features such as conference calling, voicemail, and call recording.@https://freepbx.aavaz.biz/