HD-quality audio and productivity- enhancing communications features for midsize and large conference rooms With a sleek, modern design, the B189 IP Conference Phone looks great in any executive boardroom or large conference room (even auditoriums). With Avaya OmniSound™ technology to maintain HD-quality sound for everyone on the call, an easy-to-navigate five-inch color touch screen display, and a wealth of built-in time-saving features, the B189 should be your first choice for an executive conference phone.