In spaces where users are situated beyond the recommended range of the built-in MEMs array microphones in the UC-IVB-50, one or more UC-IVB-EXM Expansion Microphones elevate the audio pickup in the room to make sure all participants are heard.

Sound quality is enhanced with an integrated DSP featuring Acoustic Echo Cancellation (AEC), Automatic Noise Suppression (ANS), and Automatic Gain Control (AGC). The omnidirectional (360°) microphone has a pickup range of 9.8ft/3m. Connect up to five (5) expansion microphones to the UC-IVB-50 via CAT-6 cable to ensure everyone in the room is heard, even in large conference rooms. (Total cable length should not exceed 164ft/50m with 3 UC-IVB-EXMs or 82ft/25m with 5 UC-IVB-EXMs).