SIP-lines - 6; color touchscreen display 7-inch backlit; virtual keyboard that supports Cyrillic alphabet; on-screen marking 24 programmable buttons; H.264 / 720P - high-quality video; Support for a wide range of codecs - G.722 / G.711 u-law / G.711 A-law / G.726 (32k) / G.729A; HDSP-wideband technology with the purest sound without noise interference, regardless of the handset, a headset or hands-free; the possibility of compatibility and Broadsoft Asterisk platforms; support JAVA language, HTML, Adobe flash; 2 Ethernet-port gigabit 1; PoE support; Remote configuration and diagnostics; Automatic software updates and settings; support tripartite conference; call waiting; Call Pickup; call forwarding; speed dialing; call hold; speakerphone and a headset can be connected; built-in mechanism working with headsets Plantronics; handset, speaker, headset volume: 15 levels (including echo cancellation and prevents distortion);