The Yealink T46U IP desktop phone is a professional-grade SIP phone with a powerful chip for maximum productivity. Optima HD Voice technology and fine-tuned hardware and software minimise background noise to guarantee a clear audio experience. Backlit 360 x 160 LCD Expandable with additional modules Yealink Optima HD audio quality 2 x Gigabit LAN ports PoE support (Power over Ethernet, IEEE 802.3af, class 2) Phone book for up to 1000 entries, Up to 12 SIP accounts EHS support Note: Power supply available separately