Digium IP Phone, D70 6-Line SIP With HD Voice English text keys 4.5 inch, 320 by 160 pixel backlit grayscale LCD display 6 line appearance keys,10 feature keys,4 context sensitive soft keys 2 switched 10/100/1000 Mbps Ethernet ports 802.3at with 802.3af compatibility Power over Ethernet (PoE)