A process for the charging of services within a communication network

Before or during use of a service by a subscriber (TLN) of a communications network (NN) is requested by a billing system (CS) of the communication network to be applied to the used service fee amount to determine the amount of fees to a collective storage system (RS) of the communication network. Depending is determined by the charging system, the expected amount of the fee and reserved on a charge account of the service subscriber using the debiting of the expected useful life, quality and / or quantity of service as well as the requested rate amount received. After termination of the use of the service by the billing system (CS), the reserved amount of the fee will be reviewed by the fact that depending again determined from the actual useful life and / or quality and / or quantity of the service used and the requested applicable fare amount of the fee amount and the reserved charge will be presence of a difference between the determined fee amounts to the difference amount is corrected. after the completion of use of the service, the reserved amount of the fee may be further corrected by an amount which is determined dependent on further agreed with the subscriber Vergebuhrungsparametern, in particular discounts and / or rebates.