English 
Backlit 3.5" color LCD - 320x240 resolution
12 lines (programmable line keys)
4 context-sensitive soft keys
4-way navigation cluster
Fixed feature buttons include speakerphone, headset, mute, volume up/down, transfer, message, do not disturb
Dual port 10/100 Ethernet switch
Dedicated RJ-9 headset port
SIP protocol support
HD voice technology delivers life-like voice quality for handset, speakerphone, or optional wideband audio headset
Acoustic Clarity technology provides full-duplex conversations, echo cancellation, and background noise suppression
Easy deployment and administration with Polycom Zero Touch Provisioning and web-based configuration
Powered via Power over Ethernet (802.3af PoE) or optional PoE injector