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Mute button does not work | Bose Noise Cancelling Headphones 700 UC
Turn on voice prompts to hear when the headphones are muted
Please note: You need to have voice prompts on to hear when the headset is muted. See Enabling or disabling voice prompts.
Also, this does not mute the microphone on the source device, only the headset. Therefore you will not see the microphone muted on the source device.