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Description / Abstract:
The present document covers offline charging for the IMS. For
clarity, the terms Offline Charging and Online charging as applied
to the IMS are defined here in clause 3. These definitions are the
same as listed in [2].
The IMS charging architecture details, requirements,
definitions, and principles are listed in [2] and therefore are not
repeated here.
In the present document the charging data triggers, message
content, and format are specified along with the transport of these
messages using the Diameter protocol. Details about charging
message flows and the definitions of the Diameter AVPs are also
included in the present document.