Polycom SoundPoint IP 550 Phone Power Supply Not Included 320x160 Graphical LCD Display, Full Duplex Speakerphone 3-way Conferencing, One Touch Speed Dial, Hearing Aid Compatible Remote Missed Call Notification, Up to 4-lines with up to 2 Calls Per Line 26 Dedicated Feature Keys, 4 Sensitive Softkeys, Dual-Port Ethernet Switch 8023.af Power Over Ethernet (PoE) AC Adapter Sold Separately