Chat 150 speakerphone for individual, small, medium or large group use. It is suitable for 7940, 7960, and 7970 series Cisco VoIP phones. The CHAT 150 USB connect to PCs for rich, full-duplex audio communications and can be used with VoIP softphones, web collaboration, instant messaging and any other applications requiring two-way audio. A perfect addition to the office or conference room for greatly enhanced collaboration. Three built-in microphones provide full 360-degree coverage up to 8 feet from device. Bridge audio from PC applications with audio on telephone for instant 3-way conference bridge.