Three-line desktop IP telephone that delivers exceptional sound quality Superb voice quality when used with a headset, handset or in hands-free speakerphone mode Full-duplex speakerphone with Polycom Acoustic Clarity Technology Dedicated feature keys offer one-button access to essential telephony features Interoperable with leading IP PBX and Softswitch platforms SIP or MGCP 160 x 80 graphical LCD Dual-port 10/100 Ethernet switch Combination of 9 dedicated feature keys and 4 context-sensitive soft keys Dedicated RJ-9 headset port Support of IEEE 802.3af or Cisco PoE with optional cable accessory