Essential to businesses in all shapes and sizes, the Polycom IP conference phone allows multiple parties to remotely converse from anywhere in the world. The goal is communicating clearly and accurately. Polycom IP conference phones are become preferred choice for conference rooms for its high level of audio clarity. This IP conference phone provides multi-person audio conferencing capabilities for medium to large conference rooms within a Session Initiation Protocol (SIP) internet telephony system. The SIP protocol allow the Polycom IP Phones to be work with most of telephone system.