name: S8HR
full_form: S8 Home Routing
context: referred in the present document as S8HR LI. Figure 20.1 S8HR LI Architecture All the functions and reference points shown in figure 20.1 shall adhere to the security requirements specified in clause 8. A condition required for the operation of S8HR LI is that the IMS signalling messages and the media packets are not encrypted at S-GW/BBIFF. Furthermore, the S8HR LI solution requires that APNs can be identified as being used for S8HR and therefore those APNs can be used to identify the EPS Bearers used for inbound roamers with S8HR. Refer to Annex J for the detailed illustration of this architecture in reference to S8HR, the process flow steps and the call flows.
description: S8 Home Routing (S8HR) is a specific interface or reference point within the Evolved Packet System (EPS) that enables home routing for inbound roamers. It involves the interaction between different network functions, such as the Serving and Packet Data Network Gateway (S-GW/PDN GW), to manage packet data traffic.
explanation: The context explicitly mentions S8HR in relation to an interface or reference point within the EPS architecture, highlighting its role in managing packet data for inbound roamers. This indicates that S8HR is primarily concerned with defining how different network functions interact, which aligns with the definition of an Interface.
section_title: 20.1.1	Overview
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