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Spec	Title	Releases	WG
24.173	IMS Multimedia telephony communication service and supplementary services; Stage 3	18.0.0 17.2.0 16.2.0 15.4.0 14.3.0 13.1.0 12.3.0 11.5.0 10.0.0 9.1.0 8.6.0 7.9.0	C1

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