1. During the Call, press the MPK button as shown above.
2. The list of MPK configured for the active account will be displayed.
3. User can choose an MPK from the list as they see convenient
Mute
During an active call, press "Mute" to mute the call. The mute icon
Operation menu in the right of the screen. Press "Unmute" to unmute the call.
Figure 74: MPK list
GAC2570 User Manual
Version 1.0.1.23
will be displayed in the Call
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