To receive faxes with PDF24 Fax you have to purchase a PDF24 Fax tariff which includes a private fax number. If you have purchased a tariff you can choose a fax number and you add the number to your tariff. Then PDF24 activates the number.
After that your new number can receive faxes. Received faxes will be sent to your E-Mail address and stored in your accounts file store.
If you already have a fax number you can also redirect your old one to the number from PDF24 to receive your faxes with PDF24 via your old number.