Pay per Minute is likely one of the most common payment methods that you will come across. You simply advertise the premium rate phone number to your consumers; they call in and are charged for every minute they stay on the phone.
This solution is available in a wide range of countries and offers various tariffs that you could potentially charge your consumers. The user will stay connected to your service until he disconnects the call, which makes this ideal for chat lines, customer services, horoscopes and higher rate credit top-ups.