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Spec	Title	Releases	WG
33.328	IP Multimedia Subsystem (IMS) media plane security	19.1.0 18.4.0 17.1.0 16.1.0 15.1.0 14.1.0 13.1.0 12.9.0 11.0.0 10.0.0 9.3.0	S3

All information on this page is aggregated from the 3GPP Specfication Status Report page.