For AvayaSoundStation2 Avaya 2490 Conference Phone DEFINITY users, communicating with crystal clarity couldn't be easier. Just connect a SoundStation2 Avaya directly into a DEFINITY ECS digital wall jack. You don't need an analog port, analog adapter, or complicated connections to take advantage of natural two-way conversations with Polycom's breakthrough Acoustic Clarity Technology. Polycom's SoundStation2 product line has redefined the standard for business-quality voice conferencing. With industry-leading full duplex for natural, simultaneous two-way conversation, the SoundStation2 Avaya will exceed your expectations in medium to small conference rooms. Delivering remarkable voice quality equal to the original SoundStation Premier 500D/550D and a 50% increase in microphone sensitivity over the award-winning SoundStation, users can speak in a normal voice and be heard clearly up to ten feet away - making every call a more productive call.