The perfect tool for impromptu conference calls, the Plantronics Calisto 620 is a portable wireless UC speakerphone that instantly transforms your laptop or smartphone into a high-quality conferencing device. Offering unmatched audio clarity, the Calisto 620 features 360 full- duplex audio and Bi-directional microphones that activate in the direction of the speaker’s voice so callers hear you?not your background. PC wideband audio and Digital Signal Processing (DSP) reduce drop-outs and echo wit
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