The SIP Handset allows PC users to connect their softphone to a convenient hand set. Tired of hunching over and speaking into your computer's tiny little microphone? So were we. This hand set brings the comfort and familiar feel of the standard telephone to the softphone experience. The SIP Handset connects to your PC's audio in and out ports. When you pick up a call, the audio and mic are routed through the handset. It's main advantage is the automatic muting of the PC speakers when it is lifted from its holder or from the desk. There is no need to lower the volume or disconnect the PC speckers during use. The SIP handset includes a thumb-wheel volume control for the earpiece, preventing volume adjustments on your pc when dialing or receiving.