Yeastar P570 is a professional IP PBX system designed for medium and large-sized businesses. The device combines VoIP communications, video conferencing, mobile and desktop communication, as well as contact center and other business communication features within a single platform.Functional Capabilities:IP PBX and Unified CommunicationsModular and scalable architectureLinkus UC Clients — mobile, desktop, and web clientsCall Center featuresVideo ConferencingNFC configurationHot Standby — system redundancy and failover supportKey Technical Specifications:Base users: 300Maximum users: 500Concurrent calls: 60 / 120Max. FXS ports: 16Max. FXO/BRI ports: 16Max. GSM/3G/4G ports: 6Max. E1/T1/J1 ports: 2Expansion boards: Up to 2 × EX08 or EX30DSP modules: Up to 2 × D30WAN: 1 × Gigabit EthernetLAN: 1 × Gigabit EthernetUSB: 1 × USBStorage: SD card / USB storageRackmount: Supported