AT&T Generic 1 - Manual (Page 27)

To resume talking to
other party (To turn on
speakerphone
microphone again) 1 Press [ Mute ]
●
Red light next to [ Mute ] goes off
2 Resume conversation with other party
To change from 1 Lift handset and talk
speakerphone to handset
●
Red light goes off next to [ Spkr ]
to speakerphone
To change from handset 1 During a call using handset, press [ Spkr ]
●
Red light goes on next to [ Spkr ]
2 Hang up handset
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