"Users: 50
Max Concurrent Calls: 25
Max Analog Ports: 8
Max BRI Ports: 8
Max Cellular Ports: 4
Max E1/T1/J1 Ports: N/A
Expansion Board: N/A
External Storage: SD Card"

"Users: 20
Max Concurrent Calls: 10
Max Analog Ports: 4
Max BRI Ports: 4
Max Cellular Ports: 1
Max E1/T1/J1 Ports: N/A
Expansion Boards: N/A
External Storage: TF Card"

"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: 100 (up to 200)
Max Concurrent Calls: 30 (up to 60)
Max Analog Ports: 8
Max BRI Ports: 8
Max Cellular Ports: 4
Max E1/T1/J1 Ports: 1
Expanion Boards: 1*EX30/EX08+1*D30
External Storage: USB, HDD"

"Users: 50
Max Concurrent Calls: 25
Max Analog Ports: 8
Max BRI Ports: 8
Max Cellular Ports: 4
Max E1/T1/J1 Ports: N/A
Expansion Board: N/A
External Storage: USB"