Conference
Starts a conference from a query call or a waiting call.
A Conference
Displays information about the conference such as phone numbers/contacts with profile picture.
B Detail bar
Displays additional information about the conference such as call time, call paths and participating groups.
Opens details.
Closes details.
C Action bar
Note: Swiping up within the action bar reveals hidden symbols.Ends the conference.
Dissolves the conference (returns to the query call).
Starts a new call.
Pauses the conference (holds).
Continues the conference (reconnects).
Mutes the microphone (mute).
Turns the microphone back on (unmutes it).
Sends DTMF signals (digits in the ring).
Further help under Call and transfer