CHF Selection
The CHF selection can be performed through one of the following options:
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PCF provides one or more CHF addresses as part of the PCC rule.
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UDM-provided charging characteristics.
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NRF-based discovery.
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SMF locally provisioned charging characteristics.
Important | The SMF uses one of the last two options to fetch the CHF IP address and port details. The SMF initially performs NRF-based discovery to select the CHF server. If the SMF fails to identify the server, then it uses the locally provisioned charging characteristics. |