Grandstream Networks UCM6304 2000 user(s) IP Centrex (hosted/virtual IP)

Conference call: Yes | AC input voltage: 100 - 240 V | Card reader integrated: Yes | Foreign eXchange Office (FXO) ports quantity: 4 | Call waiting: Yes | Ethernet LAN interface type: Gigabit Ethernet | Call park: Yes | Call forwarding: Yes | AC adapter output current: 2 A | Number of users: 2000 user(s) | Weight: 775 g | Built-in display: Yes | Caller ID: Yes | Ethernet LAN: Yes | FAX server integrated: Yes | Product type: IP Centrex (hosted/virtual IP) | SIP trunking: Yes | Depth: 270 mm | Package weight: 1.62 kg | Power over Ethernet (PoE) ports quantity: 1 | AC input frequency: 50 - 60 Hz | Height: 36 mm | Display type: LCD | Foreign eXchange Station (FXS) ports quantity: 4 | Network address translation (NAT): Yes | Width: 175 mm | Ethernet LAN (RJ-45) ports: 3 | AC adapter output voltage: 12 V | Number of simultaneous calls (max): 200 | Call queueing: Yes