What is CHF (Charging Function)?

The 5G Charging Function forms part of the 3GPP’s Charging System. It encompasses assistance for both prepaid and postpaid charging within the equivalent charging framework.
It permits charging services to be provided to network functions. A converged online and offline charging will also be assisted. The overall converged charging framework will be able to interface the billing system as for the existing system, while providing the service-based interface to the 5G system, to permit Operators to preserve their charging climate.