CHF Selection
The CHF selection, that is, CHF address determination by the SMF is performed during PDU Session Establishment. This selection is based on the following in order of priority:
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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.
Note | The local configuration is currently used to get CHF IP/port. |