G.5.2 Initial configuration for N9HR/S8HR

33.1283GPPProtocol and procedures for Lawful Interception (LI)Release 18SecurityStage 3TS

To support the N9HR/S8HR (i.e. scenario 4 listed in clause G.2), the LIPF will have to configure the BBIFF/BBIFF-C present in the packet core network. This applies to all inbound roaming users using the IMS service.

Figure G.5-1 provides the LIPF logic for N9HR/S8HR that is applicable to all inbounding roaming users using IMS services.

Figure G.5-1: LIPF logic for initial configuration for N9HR/S8HR

When the packet core network is 5GC, the BBIFF-C function is provided by the SMF and when the packet core network is EPC, the BBIFF-C/BBIFF function is provided by the SGW-C/SGW.