| 摘要 |
In a cellular telephone system, an account manager server is used to monitor all services provided to hand-held devices of the system and to charge the respective customers of the system. The server also provides advertisements to the customers via data channels for the devices. The customers are charged for services based on the number of advertisements (if any) presented on the devices. Optionally, customers may buy goods or services associated with the presented advertisements, in this case, the amount charged for voice and/or data services provided by the system are adjusted as well. |
