Our CHAT® 150 family of group speakerphones contain a microphone array, a speaker, and digital signal processing (DSP) algorithms in a compact form factor to provide professional quality audio for a small group of meeting participants. These products have USB and Bluetooth interfaces to easily connect to laptops and mobile phones. Our CHAT® 50 family of personal speakerphones contain a single directional microphone and a speaker along with high quality DSP processing and have a USB interface for plug and play connectivity to personal computers.