Scroll to Activate or Cancel.
CONFIRM CALL WAITING STATUS
Press Menu 4-2-5 (Settings > Call settings > Call waiting).
Scroll to Check status and press Select.
ANSWER A WAITING CALL
Your phone signals when you have a call waiting.
Answer to put the current call on hold and answer the
REJECT A WAITING CALL
You can just let the phone ring, or follow the steps below.
Press Options and scroll to Decline call.