4x SIP Accounts Full Duplex speakerphone 3.5' full color display with backlight 5-way conferencing Dual Gigabit Ethernet ports Built-in VPN capability 8 line keys with LED 8 feature keys (call list, headset, speaker, hold, mute, transfer, voicemail and conference) 8 line keys: 28 various features (4-pageview). 4x context-sensitive 'soft' keys. Power over Ethernet Market leading security measures Supports compatible wireless headsets (EHS30 headset adapter separate purchase) Wall mountable