Call Flows This section describes the following call flows. EPS to 5G Handover with N26 Interface – Preparation Call Flow EPS to 5G Handover with N26 Interface – Execution Call Flow UE Idle Mode Mobility from EPS to 5GS using N26 Interface EPS to 5G Handover with N26 Interface – Preparation Call FlowEPS to 5G Handover with N26 Interface – Execution Call FlowUE Idle Mode Mobility from EPS to 5GS using N26 InterfaceNon-roaming 5GS to EPS Handover with Alternate RAT Tunnel Creation Call FlowNon-roaming EPS to 5GS Handover with Alternate RAT Tunnel Creation Call Flow