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When call waiting is turned on, you can answer a new call without ending your ongoing call.
1. Find "Call Setup"
Press the Menu key.
Press Call settings.
Press Call Setup.
2. Turn call waiting on or off
Press the field below "Call waiting".
Press the indicator next to "Call waiting" to turn the function on or off.
Press the confirm icon.
3. Return to the home screen
Press the Home key to return to the home screen.