Prepaid and postpaid calling card services represent one of the fastest-growing types of enhanced voice services. A variety of consumer segments - students, business and leisure travelers, expatriates, immigrants - have fueled their growth. These services are especially popular among mobile phone users, as an alternative to mobile operators’ outrageously high international rates and roaming fees.
Calling Card System Components :
- Calling Card Module
- Soft phone/IP Phone
- Web Server
- Database Server
- Application Server
- Billing Software Installation