To make international PC-to-phone calls, you will need to purchase a prepaid card containing a PIN number. The cards are available in denomination of $20, $50, $100, and $200. The cards can be purchased at authorized retailers.

The validity of the cards after first use: $20 - 60 days, $50 - 120 days, $100 - 150 days, and $200 - 180 days.