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Mute

Mute button is used to silence the sound outputs of audio device, i.e. mute button switch audio device to silent mode. "Silent mode is a setting available on mobile phones and pagers that, when activated, disables the ringtones and, in some cases, also the vibrating alerts. Unlike the airplane mode, the silent mode still allows the device to receive and send calls and messages. This quiet option is useful in several situations or places, such as meetings, speeches, libraries, museums, or places of worship. In some places it is mandatory to use the silent mode or to switch off the device." [Silent mode. Wikipedia]
Mute
Mute, mute,