ABSTRACT
To perform its tasks, a mobile communication system implements several fundamental functions, including call management, call billing, call routing, data communication, and data protection. For billing needs, the mobile communication system handling the communication connection is responsible for sending to the communication’s service provider a billing record, translating the raw connection details, according to rates and plans, into particular charges (for the MIN holder). The signal carriers, involved in the connection establishment, set up accounts with each other for the services provided on the other networks. End users typically pay a combination of monthly service charges and per-minute charges, although prepaid plans with only per-minute charges are becoming more popular.
