Grandstream GXP2110 4-Line Key System IP Phone, VoIP Phone and Device Generous 240x120 pixel backlit graphical LCD display with up to 8 level grayscale 6 lines indicators with individual SIP account profiles 7 programmable hard keys and 4 XML programmable context-sensitive soft keys Multi-line support of up to 13 call appearance lines with dual-color LED indicators Dual switched 10/100Mbps Ethernet ports w/integrated Power-over-Ethernet (802.3af)