The SoundPoint IP 550 desktop phone features Polycoms revolutionary HD Voice technology, which brings life-like richness and clarity to every call.1,5 Polycom HD Voice technology incorporates wideband audio for over twice the voice clarity; Polycoms patented Acoustic Clarity Technology for crystal-clear, noise- and echo-free sound, plus best-in-class system design for high-fidelity, faithful voice reproduction.