Immersive sound for calls and music A premium full-duplex experience Yealink speakerphones support full-duplex technolo-gy, so calls sound their best on both ends. Intelligent noise canceling Enjoy crystal-clear sound thanks to the distrac-tion-free noise canceling technology, so participantscan focus on the call and catch every single word andidea. Excellent sound performance Built with wideband audio, acoustic echo cancellation, and Optima HD Voice, Yealink speakerphones provide exceptionally clear sound.