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3 specifications found, displaying 1 to 3
Specification NumberTypeTitleStatusPrimary Responsible Group 
23.221TSArchitectural requirementsUnder change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.228TSIP Multimedia Subsystem (IMS); Stage 2Under change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.818TROptimisations and Enhancements for Realtime IMS CommunicationWithdrawn before change control S2
See details Internal Common IMS 2G 3G LTE 5G