. Using headsets in the office is a key part of the modern workday.. VOIP calls are quickly replacing traditional phone services & helping companies save on big telecom costs Key Product Info. Headsets in the office is a key part of the modern workday VOIP calls are quickly replacing traditional phone service & saving companies on big telecom costs Comfort fit mono or stereo design Adjustable headband & boom arm 180 degree microphone Models that fit either the 3.5 mm or USB (Universal Serial Bus) with your notebook workstation tablet