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Spec	Title	Releases	WG
22.228	Service requirements for the Internet Protocol (IP) multimedia core network subsystem (IMS); Stage 1	19.0.0 18.0.1 17.1.0 16.1.0 15.3.0 14.1.0 13.3.0 12.10.0 11.6.0 10.5.0 9.4.0 8.7.0 7.6.0 6.11.0 5.7.0	S1

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