8 lines?? 4 SIP counts?? 4 XML programmable context-sensitive soft keys</br>Dual switched?? auto-sensing gigabit ports?? built-in poe?? USB port</br>32 digitally programmable and customizable blf/speed-dial keys</br>Built-in Bluetooth for syncing headsets and mobile devices for contact books?? calendars & call transferring</br>HD audio on the Handset and speakerpho