• Yealink Optima HD voice • Dual-port Gigabit Ethernet • 4.3" 480 x 272-pixel color display with backlight • Wi-Fi via WF40 • Bluetooth via BT40 • USB recording • Up to 16 SIP accounts • Paper label free design • PoE support • Headset, EHS support • Supports expansion modules • Stand with 2 adjustable angles • Wall mountable (optional) • Simple, flexible and secure provisioning options