Content for TS 33.107 Word version: 18.0.0
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F Examples of IMS-based VoIP Lawful Interception (LI) call flows
F.1 General remarks
F.2 Call Originations from Target in Home CSP
F.3 Call Terminations to Target - Home CSP
F.4 Call Forwarding - Non Roaming
F.5 IMS Roaming
F.6 Interception in Visited CSP
F.7 Ad-Hoc Conference Calls established by the Target
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F Examples of IMS-based VoIP Lawful Interception (LI) call flows |R12| p. 339
F.1 General remarks p. 339
F.2 Call Originations from Target in Home CSP p. 339
F.2.0 Introduction p. 339
F.2.1 Target Originated Call - Target (Party_A) Calls Party_B p. 340
F.2.2 Target Originated Call - Target (Party_A) dials a Special Number p. 341
F.3 Call Terminations to Target - Home CSP p. 341
F.3.0 Introduction p. 341
F.4 Call Forwarding - Non Roaming p. 342
F.4.0 Introduction p. 342
F.4.1 Intra-CSP Call Forwarding Unconditional p. 343
F.4.2 Intra-CSP Call Forwarding No Answer p. 344
F.4.3 Inter-CSP Call Forwarding Unconditional p. 346
F.5 IMS Roaming p. 346
F.5.0 General p. 346
F.5.1 Roaming Target Originates a Call p. 347
F.5.1A CC Unvailable in Home CSP due to Optimal Media Routing |R13| p. 348
F.5.2 Call Termination to a Roaming Target p. 349
F.6 Interception in Visited CSP p. 349
F.6.0 General p. 349
F.6.1 Interception in Visited CSP - Target Originated Call p. 350
F.6.2 Interception in Visited CSP - Target Terminating Calls. p. 351
F.6.3 Incoming Call to Roaming Target is forwarded due to Call Forwarding No Answer p. 352
F.7 Ad-Hoc Conference Calls established by the Target |R13| p. 352
F.7.0 Introduction p. 352
F.7.1 Party_A (target) creates the conference p. 353
F.7.2 Party_C joins the conference p. 353
F.7.3 Party_B joins the conference p. 355
F.7.4 Party_C drops out of the conference p. 358
F.7.5 Reconfiguration from Conference to two-party call p. 359
F.7.6 Party_A (target) places Conference on hold p. 360
F.7.7 Party_A (target) retrieves Conference from hold p. 361
