Polycom 2200-48400-025 Corded Voice Over IP Phone / 12-Line Operation.</br>SIP Voice Over Internet Protocol (VoIP).</br>Dual-Port 10/100/1000 Mbps Ethernet Switch / USB Port / Remote Missed Call Notification.</br>Optional AC Adapter (Not Included).</br></br>Product Description</br></br>Polycom VVX business media phones provide a unified voice and video communication experience for executives, knowledge workers, and call attendants in organizations of all sizes.</br><br/>http://www.amazon.com/gp/product/B01EECUG4Y