TIA TIA-873.007

The present document describes the architecture for charging and billing for IMS services.

For the purpose of the present document, the charging data is considered to be generated and collected by charging functions in the network elements.

The objectives of the present document are:

- to describe principles of charging in an IMS network;

- to provide a description of the charging architecture; and

- to provide the descriptions of events and triggers for the generation of charging data.