Voice in HD. Dual Gigabit Ethernet port. PoE support (Power over Ethernet). 7" screen and 800x480 pixels with backlit keyboard. Support Bluetooth headset with USB Dongle. Up to 6 IP accounts. Supports up to 6 expansion modules. RJ9 jack headset connection. Simple, flexible and safe. Call waiting. Mute key Conference call to 3. Up to 1000 contacts. LED indicator. Volume control keys.