Yeastar P570 IP PBX

Users: 300 (up to 500)
Max Concurrent Calls:60 (up to 120)
Max Analog Ports: 16
Max BRI Ports: 16
Max Cellular Ports: 6
Max E1/T1/J1 Ports: 2
Expansion Boards: 2*EX30/EX08+2*D30
External Storage: USB, HDD
LAN/ WAN (10/ 100/ 1000Mbps)