the Cc 550 Ip Improves Overall Call Quality When Connected To A Wideband Supported Communication Line. Compared With Traditional Narrowband Headsets, Wideband Technology Offers A More Natural And Warm Sound, And Captures More Speech Details At High And Low Frequencies. The Cc 550 Ip Delivers Natural High-definition Sound For Superior Voice Clarity, Accented Speaker Recognition, And Reduced Echo. The Benefits Are Increased Productivity And Less Fatigue On Business Calls.