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Yes, you can erase your call block list, please access this link for instructions: http://help.panasonic.ca/viewing/ALL/KX-TGD510/OI/TGD510_PNQX8349ZA/TGD510_PNQX8349ZA.pdf#page=16
Sorry, there was a problem. Please try again later.Never tried to clear it completely but you can edit the block list. User guide says that you can clear the block list. If robocalls are a problem, get the Panasonic KX-TGA710 or 760.
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