FANVIL X301W - 2 SIP LINE WI-FI IP PHONE Operating System : Linux Main Screen : 128x48 2.3 Backlight : yes Line Keys : 0 DSS Keys : 0 SIP Lines : 2 Audio Conference : 6-way Call Logs : 600 Local Phonebook : 1000 Remote Phonebook : 1000 Action URL / URI : yes HD Audio : yes Wideband Codec :G.722, Opus Narrowband Codec : G.711a/u,G.726,G.723.1,G.729A/B, iLBC WiFi : 2.4GHz &5GHz WiFi Network Rate : 2X10/100Mbps Power Supply PoE : no EHS Headset support : yes Desktop Stand : 45° and 50° Wall Mountable : yes (Brackets not included)