End all calls—Ends all active calls.
Contacts—Use the phone book. Once you open the phone book, pressing the End
key will not close the phone book, but it will end the current call.
Menu—Takes you to the main menus.
Mute—Mutes the phone microphone. If the microphone has already been muted,
Unmute appears instead of Mute. Press OK to choose either of these options.
Note: The above options can affect the microphones of any enhancements
connected to the phone.
• CALL WAITING