The b189 ip conference phone is the most sophisticated conference phone yet from avaya designed specifically for use in avaya aura networks 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 yo