With the Plantronics Quick Disconnect, HW251N headsets will plug into an amplifier or direct-connect cable, which then plugs into your telephone. You can also connect a USB audio processor to the headset for PC applications and VoIP softphones.
Look no further if you are looking for USB monoural headset for call center. The plantronics blackwire is perfect choice for this it has all call control features and a solid design. Beside noise cancel and echo cancel. it offer unique QE Quality enhancement technology.