System and method for charging in a communications network and a communications network charging server

The invention relates to a a charging system and method and communication network and server for communication network. The system comprises a network association's client (1), a providing service with the network association's user. The charging server (2) is suitable for processing the user account information, the client (1) is at service provided by the online charging protocol (3) (2) sends the first charging request message to the charging server. The charging server (2) is suitable for carrying out a plurality of the amount of the user account in advance the operation of resource, wherein there are connected to a fixing the quantity of the related service request message, and is suitable for using the online charging protocol (3) to a client (1) with acknowledge message, wherein a information indicating whether a on the user account to determine for comprises a to the service the multiple are resource information.