6.2.8 Media Inactivity Detection

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

This procedure is identical to that of clause 6.2.1 apart from the IMS-ALG optionally requesting the IMS-AGW to detect inactive media.

If media inactivity detection is required for the created termination, the IMS-ALG may include the information elements "Inactivity detection time" and "Inactivity detection direction" in the request sent to the IMS-AGW. The IMS-ALG may request the detection of media inactivity on a termination or a stream basis.

When the IMS-ALG receives a notification of inactive media from the IMS-AGW via the Media Inactivity Notification procedure, the IMS-ALG shall return a Media Inactivity Notification Ack and shall take appropriate action (e.g. release the termination).

Figure 6.2.8.1: Media Inactivity Notification