| 摘要 |
A method involves storing a change data record with a change data in a network element of a data transmission network; transmitting a service request message for the use of a service by the user; allocating a service termination data for the user according to the service request message; changing the termination date according to the use of the service in the network element, and; determining the end of the service according to the service termination date in the network element. The method is simple and offers numerous advantages.
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