G.6.2 LIPF logic for service type messaging

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

G.6.2.1 Flowcharts

Figure G.6-1 provides the top-level view of LIPF logic for the service type of Messaging.

Figure G.6-1: Top-level view of LIPF logic for service type of Messaging

The IRI-POI in HSS, UDM and LMISF-IRI are provisioned only when a target is not a non-local ID.

Figure G.6-2 shows the LIPF logic for service type Messaging with SMS over IMS.

Figure G.6-2: LIPF logic for service type of Messaging for SMS over IMS

The P-CSCF (in figure G.6-2) provides IRI-POI functions under certain conditions as noted within the illustration. To prevent the IRI-POI in P-CSCF from providing the LI functions when not supposed to, the LIPF may have to include a parameter during the provisioning.

Figure G.6-3 shows the LIPF logic for LALS triggering with service type of Messaging.

Figure G.6-3: LIPF logic for LALS triggering for the service type of Messaging

The P-CSCF (in figure G.6-3) provides LTF functions under certain conditions as noted within the illustration. To prevent LTF in P-CSCF from providing the LI functions when not supposed to, the LIPF may have to include a parameter during the provisioning.