Screen : Monochrome display 3.2 inches x 2.2 inches (8.2 cm x 5.5 cm) 180 x 120 pixels Lines : 1 Networking : 10/100 Base T Ethernet connections Voice Codecs : Standards-based codec support: G.711, G.726, G.729A/B, G.722 (G.726 is not available in SIP) Network Protocols : SIP protocol support, H.323 protocol support Features : 8 buttons with dual LEDs (red, green), 4 softkeys, Ergonomic hearing aid compatible handset Power Supply : Multiple options, including support for PoE Dimensions : 23 x 20.4 x 3.5 Weight : 1.4 Kg