With the Polycom SoundPoint Pro desktop Conference Phone, smaller rooms and individual offices get the same full-duplex clarity as the boardroom, with a front microphone optimized for hands-free, one-to-one phone conversation. Press the rear microphone key on the Professional model for group conferencing with 360° coverage. You can have up to a 3-way unassisted conference right from your desktop. Use it as a handset, in speaker mode, or attach a headset. Change modes with a touch of a key or by lifting the handset.Easily switches between speakerphone,headset,and handset modes 32-character LCD display shows number dialed,length of call and other useful information Keypad ativated rear microphone for group conferencing applications 99-number incoming and outgoing call history directories Mute button allows private off-line conversation