6.2.11 Change Through-Connection

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

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

The Change Through-Connection procedure is used for opening and closing of gates and is mandatory for IMS-ALG and IMS-AGW to support. The IMS-ALG sets the Stream mode parameter using the Change Through-Connection procedure to request the IMS-AGW to one-way or both-way through-connect or block media streams on a termination.

The IMS-ALG may combine the Change Through-Connection procedure with the Reserve and Configure AGW Connection Point, Reserve AGW Connection Point or Configure AGW Connection Point procedure as in Figure 6.2.1.2., or may apply this procedure separately.