A method is provided for handling a service of a predetermined type within a charging system comprising a server and a client. The method includes receiving, at the client, a request for the service of the predetermined type from a terminal, transmitting said request from the client to the server in a charging control request in which the service of the predetermined type is indicated, checking, at said server, whether the requested service of the predetermined type can be granted, and if granted, responding, by said server, with a control message to the client, and measuring, by the client, the usage of resources consumed by the granted service in response to said control message, and reporting the measured used resources for the service at a predetermined condition from the client to the server in a report message. The present invention relates also to a corresponding system and network entities.