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It has a flash button on the handset.
Sorry, there was a problem. Please try again later.Dear customer, there is flash/call wait button on the base unit and on the handsets. Please access this link, for the base unit check code (8) and for handsets check code (11): http://help.panasonic.ca/viewing/ALL/KX-TGF350/OI/TGF350_PNQX6715ZA/TGF350_PNQX6715ZA.pdf#page=11
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