Yeastar YR-P570

Users: 300 (up to 500)Max Concurrent Calls:60 (up to 120)Max Analog Ports: 16Max BRI Ports: 16Max Cellular Ports: 6Max E1/T1/J1 Ports: 2Expansion Boards:2*EX30/EX08+2*D30External Storage: USB, HDD