4 Overview

29.5503GPP5G SystemRelease 18Stage 3Steering of roaming application function servicesTS

4.1 Introduction

Within the 5GC, the Steering Of Roaming Application Function (SOR-AF) provides services (see 3GPP TS 23.122 [14]) to NF service consumers (e.g. UDM) via the Nsoraf service based interface.

NOTE: The generation and calculation of the SoR information and associated roaming business logic are out of scope of this document.

Figure°4.1-1 depicts the reference architecture of the SOR-AF.

Figure 4.1-1: Reference model – SOR-AF