Screen : 5" high-resolution (800 x 480) WVGA color display Lines : N/A Networking : An internal 2-port Cisco Ethernet switch allows for a direct connection to a 10/100/1000BASE-T Ethernet network (IEEE 802.3i/802.3u/802.3ab) through a RJ-45 interface with single LAN connectivity for both the phone and a co-located PC. Voice Codecs : G.711 a-law and mu-law, G.722, G.729a, Internet Low Bitrate Codec (iLBC), and Internet Speech Audio Codec (iSAC) Network Features : User Datagram Protocol (UDP), Dynamic Host Configuration Protocol (DHCP), Gratuitous Address Resolution Protocol (GARP), Cisco Discovery Protocol Signaling protocol support : Skinny Client Control Protocol (SCCP) and Session Initiation Protocol (SIP) with Cisco call control Power Supply : Supports IEEE 802.3af PoE (Class 3). 48VDC is required; it can be supplied locally at the desktop using an optional AC-to-DC power supply (part number CP-PWR-CUBE-3=) or power injector (CP-PWR-INJ=). Dimensions : 229.1 x 257.34 x 40 mm Weight : 1.19 kg