6.2.23 RTP-level pause and resume

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

Figure 6.2.23.1 shows the message sequence chart example for indicating RTP-level pause and resume.

Figure 6.2.23.1: Procedure to indicate RTP-level pause and resume

This procedure is identical to that of clause 6.2.1 apart from the IMS-ALG optionally requesting the IMS-AGW to transparently forward the RTCP "CCM PAUSE" packets (as defined in IETF RFC 7728 [79]) between incoming and outgoing network.