If you do not want to be interrupted during a call, you can turn Call Waiting off prior to making/receiving a call.
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Press n until you see �Wait.� Press O under �Wait.� Press P under �Off.� Call Waiting is now disabled for the next call. It will automatically reset to �On� when you end the call.
Three-Way Calling
Using Three-Way Calling, you can combine two ongoing phone calls into one conversation. This option is available only when you initiate the second call.
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Place or receive a phone call. Press O under �3Way� to place the first call on hold. Enter the phone number of the second individual you want to call or press s to select the number from your stored list, and press e. After you reach the second individual, press O under �3Way.� Both numbers will appear on your display. To end the three-way call, press e or close the cover.