Screen : 396 x 162 pixel (3.5 in. / 89 mm) High-resolution, graphical grayscale display Lines : 4 Networking : Integrated IEEE 10/100/1000 switch Voice Codecs : G.711a/?, G.722, G.729a, iLBC Network Features : Cisco Discovery Protocol, Transparent secure roaming, Provisioning of network parameters through DHCP Signaling protocol support : Session Initiation Protocol (SIP) Features : Four line and programmable feature keys, Built-in speakerphone, Wideband for enhanced audio clarity Power Supply : The phone supports IEEE 802.3af PoE (Class 1), Cisco power cube 3 (CP-PWR-CUBE-3=) and Cisco power adapter 3 (CP-PWR-ADPT-3) Dimensions : 20.7 x 20.6 x 2.8 cm Weight : 867 g

Screen : 800 Χ 480, 24-bit color, 5-inches WVGA display Lines : 5 Networking : 2-port Cisco Ethernet switch allows for a direct connection to a 10/100/1000BASE-T Ethernet network Voice Codecs : G.711a-law and mu-law, G.722, G.729a, Internet Low Bitrate Codec (iLBC), and Internet Speech Audio Codec (iSAC) Network Features : Session Initiation Protocol (SIP), Session Description Protocol (SDP), UDP, DHCP, GARP Signaling protocol support : Session Initiation Protocol (SIP), IPv4 and IPv6, Features : The phone offers an easy-to-use interface and provides a traditional telephony-like user experience, Wideband for enhanced audio clarity, Line keys, Soft keys, Four-way navigation keys Power Supply : IEEE Power over Ethernet class 2, Cisco IP Phone Power Cube 4 Dimensions : 229.1 x 257.34 x 40 mm Weight : 1.17 kg