To mute the microphone associated with the handset so the other party cannot hear you

1Press [ Mute ]

Red light goes on and other party cannot hear you

2Press [ Mute ] again to resume talking to other party through handset

Red light goes off and other party can hear you again

To change from

1 Lift handset and talk

speaker to handset

 

 

 

To change from

1

Hang up handset

handset to speaker

2

Press [ Speaker ]

 

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Image 52
AT&T 7406BIS manual