Polycom SoundStation IP 6000 SIP-based IP Conference Phone - AC Power or 802.3af Power over Ethernet. Incl 100-240V power supply, 0.4A, 48V/19W; NA power plug; 25ft/7.6m Cat5 shielded Ethernet Cable; Power Insert Cable. Expandable

With PoE port, transfer data and power on a single cable to places where a power outlet is absent Connect everyone in the same room and avail superior voice quality, hassle-free wiring, and administrative cost benefits Uses VoIP technology to transfer audio signals over the Internet while circumventing high toll charges by telephone companies