Using post-paid service does not oblige you to be a registered member of Medianis. You can only enter "medianis" as your user/password in the dial-in connection window.
Post-paid is compatible both with analogue or digital phone numbers including ISDN.
Internet access is charged through phone bill only.
Phone impulse price:
The VAT is not included in the price.
(more detailed information available on the site of Telekom)