The Yeastar P570 P-Series IP PBX is more than just a PBX.  The reliable telephony solution is a more converged system purpose-built for SMEs to meets all your business communication needs. With 16 FXS ports, 16 FXO ports, and support for up to 120 concurrent calls, this IP PBX is robust and scalable, allowing you to add extensions or lines as your business expands without any difficulty. The P-Series IP PBXs also come with system indicators that ensure smooth operations, with a blinking light indicating that the system is working properly, and a static or off light indicating that there is a problem. As a “PBX-Plus-More” solution, the P-Series unify a suite of services together, including voice, mobility, presence, web application, collaboration and more, helping SMEs to enable extra productivity, fill the UC gap, and accomplish more sophisticated tasks.