Product DescriptionUser Interface Features 3.7" screen with backlight Audio Features Optima HD voice with Acoustic Shield and Smart Noise Filtering Basic Features Up to 12 SIP accounts PoE support Stand with two adjustable angles, wall mountable Advanced Features Wi-Fi via WF40/WF50, Bluetooth via BT41 Support expansion modules Support USB recording Connectivity Dual USB ports, dual-port Gigabit Ethernet Headset, EHS support