P570
"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"
"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"