Virtual VoIP Calling service

One of my friends in Nepal took a very well thought initiative for the local people of his city who were unaware of the cheaper calling rates that VoIP provides. On account of a poor computer penetration and less familiarity with the internet, its not possible for the people to keep in touch with their relatives abroad. The only solution is making ISD calls. So he came up with this idea wherein International calling cards will be provided to the people.

The people will make calls to a local phone at his centre which will further get routed to USA, UK, Australia etc. through an IPPBX. At present he owns three local phone lines which are connected to the server. The caller first makes a local call to his centre. After his caller ID gets authenticated, he is asked to enter the international number. Thus the call gets routed overseas through a SIP provider. There are many advantages of this system to the caller

1. No need to enter any Password.
2. Only Caller ID authentication is required.
3. Caller needs just the calling card.
4. No need of computer or net connectivity.
5. Balance amount in the calling card can be checked over the same local call by just entering a specific number.

All this integration was done remotely in a time of less than 5 days. Very soon he wants to integrate a Mobile Line through Bluetooth with the ippbx.