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Spec	Title	Releases	WG
29.235	Interworking between SIP-I based circuit-switched core network and other networks	18.0.0 17.0.0 16.0.0 15.1.0 14.1.0 13.2.0 12.2.0 11.4.0 10.4.0 9.11.0 8.9.0	C3

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