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Google this page is not a duplicate O2 Call waiting If you are using the phone and another call is made to you you will here an alert during the call. Press the button to switch the call, then the same button to switch back. or Press *43# DIAL/SEND to switch Press #43# DIAL/SEND when completed Press *#43# DIAL/SEND to find out if Call Waiting is ON or OFF IP | ||||
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