Using Speakerphone; Using Features While On A Voice Call; Muting Microphone - Motorola A920 Reference Manual

Speakerphone Key
Volume Key

Using Speakerphone

Your handset has a built-in speakerphone that allows hands-free
use. Press the Speakerphone key on the side of the handset to turn
the speakerphone on and off.
If you want to answer an incoming call using the speakerphone,
press the Speakerphone key while the handset is ringing or
vibrating.

Using Features While on a Voice Call

Muting Microphone

To mute the microphone so the person on the other end cannot
hear you, tap the
While the call is on mute, the
the microphone back on, tap
button in the call screen.
Mute
Mute
Unmute
button changes to
.
. To turn
Unmute
Calling Features - 45