CISCO 6821 PHONE FOR MPP NA POWER ADAPTERCisco 6821 IP Phone Corded Corded Wall Mountable 2 x Total Line VoIP 2. 5" (63. 50 mm) LCD 2 x Network (RJ 45) PoE Ports VPN: CP 6821 3PW NA K9= SKU: 821PPJ UPC: 889728173711 Uses VoIP technology to transfer audio signals over the Internet while circumventing high toll charges by telephone companies With PoE port, transfer data and power on a single cable to places where a power outlet is absent