Noise-canceling microphone filters out background noise A mono headset optimized for use with all leading Unified Communications systems & featuring a lightweight, comfortable design. Designed for IP-based telephony & Unified Communications systems The UC Voice 150 mono headset is optimized for use with all leading Unified Communications systems. Its design makes it suitable for light, daily use. Employees & customers enjoy a clearer conversation, with the headset's noise-canceling microphone & wideband audio that optimizes the employee's voice so it transmits with clarity.