Polycom VVX300 Series Business Media Desktop Phone, PoE (2200-46135-025) Power Supply Not Included Backlit grayscale graphical LCD (208 x 104). 6 line or speed dial keys. HD Voice up to 7KHz on all audio paths (Speaker, Handset, Headset). Hard Keys: 12-key dial pad, home, speaker, mute, headset, volume, messages, hold, transfer. This unit is designed for PoE (Power Over Ethernet), and does not include a power adapter. AC adapter sold separately.