What does I-SMF handle in 5G VN group communications?
The local connectivity to the UE when it is outside the service area of the SMF set associated with the DNN/S-NSSAI used for a 5G VN group.
The local switching at local PSA UPF(s) in a 5G VN group.
The redundancy for the reliability of 5G VN group communications.
The control of the N19 tunnel between the UPF(s) involved in a 5G VN group communication.
The support of 5G VN groups with UE(s) spread over a large country.