For countless office workers across the globe, a headset is an essential everyday tool and so is a mute switch when you want to listen but not the other person hear you. The Plantronics (# 27708-01) Inline Mute Switch gives you the freedom to mute while on a call, so that the person on the other end doesn't get to hear you. The mute button should only be used for short pauses as the caller won't have an idea if the call is active or not. This Plantronics Mute switch can be connected to any H-series Plantronics headset with quick disconnect plug. Commercial-grade headsets have unique cable ends what the industry calls a “quick-disconnect” connection. This allows you to quickly disconnect your headset from the amplifier leave your headset on at all times, or bottom cable when you need to walk away from your desk.