Polycom Voicestation 300 (2200-17910-001) More productive calls  Polycoms patented Acoustic Clarity Technology allows simultaneous, natural, free-flowing conversation 360-degree room coverage  A powerful, digitally-tuned custom speaker and three sensitive microphones provide uniform coverage from up to 7 feet away Hands-free calls A great hands-free conferencing solution for home offices and small businesses Resists interference from mobile phones Clearer calls with no distracting noise from wireless device Easy to use and install  Connects into any analog phone jack, Secondary phone options  Plug in a fax machine or a handset for private calls