Unsubscribe Counters (N28 Session Termination)
On receiving an N7 terminate request, PCF triggers an N28 Nchf_SpendingLimitControl_Unsubscribe request towards CHF for unsubscribing for changes in N28 counter information.

Step |
Description |
---|---|
1 |
The SMF sends a N7 Delete request to the PCF. |
2 |
The PCF sends a Delete Session request to the CDL. |
3 |
The PCF sends a N28 Unsubcribe request to the CHF. |
4 |
The PCF forwards the N7 Terminate Success message to SMF. |
5 |
If the unsubscribe request is successful, then the CHF sends the N28 Unsubscribe response to the CHF. |