N9: Interface between two UPF’s (i.e the Intermediate I-UPF and the UPF Session Anchor) N6: Interface between the Data Network (DN) and the UPF. N4: Interface between the Session Management Function (SMF) and the UPF.
N9: Interface between two UPF’s (i.e the Intermediate I-UPF and the UPF Session Anchor) N6: Interface between the Data Network (DN) and the UPF. N4: Interface between the Session Management Function (SMF) and the UPF.