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With an item selected, you can tap to dial the number or to
delete the item.
To clear all items in the current list, tap .

5.4 Operations during a Call

During a call:
z If you need to input other numbers, such as an extension number, tap to
open the keypad and tap the digits. The keypad will close when you tap the
button again or when there has been no input for 5 seconds.
z Tap to mute your sound so that the other party cannot hear you. To
end the mute mode, tap the same button again.
z Tap to end the call.