||The technology of voice over IP (VOIP) has been become more useful than traditional VOIP technology. In
the past, human used the public switched telephone network (PSTN) to dial up from the source site to the
destination place, but this method had occupied one line until terminating talking. Nowadays, the Internet is
most popular and uses in the widespread areas such as habitation, school, enterprises, the government and
airports. Furthermore, the communication on the Internet is without occupied one line until terminating talking.
Also, the new VOIP technology with flexible billing system is instead of the traditional technology with the
fix and expensive communication fees.
Billing System will be according to the user profile (User ID, telephone, address, etc...), Rating Plan,
Tariff& Sharing Schemes and Bill data to calculate the communication fees. The communication bill list will
be produced after bill production finishes whole process. The Bill Printing will print the bill list by the bill
cycle and send the bill list to user via mail or E-mail. And the user can access the web site to know the
information of bill and more.