The VXI CT Switch is a voice input control switch designed for use by individuals with severe physical or upper extremity disabilities or spinal cord injury. This unit allows the user to alternate a headset between a personal computer (PC) and telephone by pushing a button. Reception stays open on both sides at all times, enabling the user to hear computer prompts while speaking on the phone. Features include microphone mute, reception volume control, and a handset/headset switch. The unit connects to a PC sound card and is compatible with most phone systems with a number pad on the phone's base (not the handset). This unit operates with TalkPro SP1 or SP2 headsets (see separate entries). WARRANTY: Two years.