DCalling does not use physical calling cards, which you can buy at a newsstand or call shop. DCalling is an Internet-based service. You sign up for DCalling online and free of charge. After signing up you can use your 0,42 Cent (EUR) free trail credit. Once you have tested our service, it is up to you to recharge your account. This can be done via Internet as well, so you do not have to buy new calling cards again and again.