6.2.17 Procedures for Interactive Connectivity Establishment (ICE)

23.3343GPPIP Multimedia Subsystem (IMS) Application Level Gateway (IMS-ALG) - IMS Access Gateway (IMS-AGW) interface: Procedures descriptionsRelease 17TS

6.2.17.1 ICE lite

Figure 6.2.17.1.1 shows a message sequence chart example for performing the ICE lite procedure towards the offerer.

Figure 6.2.17.1.1: Procedure for interactive connectivity establishment using ICE lite towards the offerer

6.2.17.2 Full ICE

Figure 6.2.17.2.1 shows a message sequence chart example for performing the full ICE procedure towards the offerer.

Figure 6.2.17.2.1: Procedure for interactive connectivity establishment using full ICE towards the offerer

6.2.17.3 Connectivity check result notification (full ICE)

Figure 6.2.17.3.1 shows the message sequence chart example for an ICE connectivity check result Event.

Figure 6.2.17.3.1: Procedure to report ICE connectivity check result

6.2.17.4 New peer reflexive candidate notification (full ICE)

Figure 6.2.17.4.1 shows the message sequence chart example for additional connectivity check when new peer reflexive candidate is discovered in full ICE.

Figure 6.2.17.4.1: Procedure to perform additional connectivity check upon the report of new peer reflexive candidate

6.2.17.5 STUN consent freshness test

Figure 6.2.17.5.1 shows a message sequence chart example for requesting the STUN consent freshness test procedure towards the offerer when full ICE is supported by the eIMS-AGW.

Figure 6.2.17.5.1: Procedure for STUN consent freshness test towards the offerer

6.2.17.6 STUN Consent Freshness Test Failure Notification

Figure 6.2.17.6.1 shows the message sequence chart example for an ICE STUN consent freshness test failure Event.

Figure 6.2.17.6.1: Procedure to report STUN consent freshness test failure