Cisco CP-8841-3PCC-K9 SIP VoIP Phone for Third Party Call Control

"Cisco IP Phone 8841 with Multiplatform Phone firmware. Uses VoIP technology to transfer audio signals over the Internet while circumventing high toll charges by telephone companies, Cable connectivity assures easy operation and you don't have to charge the batteries now and then, With PoE port, transfer data and power on a single cable to places where a power outlet is absent "