How To Unblock Blocked Numbers On Panasonic Phone. You may access and edit that block list on the phone, find the number, and remove it from the block list, unblocking the number again. Removing a barred phone number;
To access your blocked numbers menu, enter 217 on the numeric phone keypad. Removing a barred phone number; Press the arrow up or down button to select the telephone number that you want to erase.