In this lesson you will learn,

• Difference between Home Routed (HR) roaming, and Local Break Out (LBO) roaming.

• The role of the SEPP to securely exchange signalling messages between the control plane in the visited PLMN and the control plane in the home PLMN.

• The role of the IPUPS mechanism to securely exchange user plane data between the visited network UPF and the home network UPF.