The ZMS-15 allows you to connect a 3.5 mm audio soundcard headset to your ZoomSwitch products. This cable allows you to take an inexpensive legacy computer-styled headset that was built to connect to your soundcard and use it on both your phone and via USB on your PC. This cable is designed to be used in conjunction with another ZoomSwitch product, but may also work as a direct connect solution with certain configurations.: