Fanvil X4U

Enterprise   IP Phone HD audio with Harman Speaker and wideband codec G.722 and Opus

High-definition 2.8-inch 320x240-pixel colour display, 2.4-inch 320x240-pixel   colour side display

12 SIP lines, 30 DSS keys, 3 line keys with LED light,   Dual Gigabit port, PoE integrated

Support EHS wireless headset

Support   Bluetooth via Bluetooth dongle,

Support WiFi via WiFi dongle

Support IPv4 , IPv6 protocol