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152 specifications found, displaying 1 to 50
Specification NumberTypeTitleStatusPrimary Responsible Group 
21.202TSTechnical Specifications and Technical Reports relating to the Common IP Multimedia Subsystem (IMS)Under change control SP
See details Internal Common IMS 2G 3G LTE 5G
22.173TSIP Multimedia Core Network Subsystem (IMS) Multimedia Telephony Service and supplementary services; Stage 1Under change control S1
See details Internal Common IMS 2G 3G LTE 5G
22.228TSService requirements for the Internet Protocol (IP) multimedia core network subsystem (IMS); Stage 1Under change control S1
See details Internal Common IMS 2G 3G LTE 5G
22.250TSIP Multimedia Subsystem (IMS) Group Management; Stage 1Under change control S1
See details Internal Common IMS 2G 3G LTE 5G
22.279TSCombined Circuit Switched (CS) and IP Multimedia Subsystem (IMS) sessions; Stage 1Under change control S1
See details Internal Common IMS 2G 3G LTE 5G
22.340TSIP Multimedia Subsystem (IMS) messaging; Stage 1Under change control S1
See details Internal Common IMS 2G 3G LTE 5G
22.800TRIP Multimedia Subsystem (IMS) subscription and access scenariosUnder change control S1
See details Internal Common IMS 2G 3G LTE 5G
22.823TRStudy on enhancements to IMS for new real time communication services Under change control S1
See details Internal Common IMS 2G 3G LTE 5G
22.834TRStudy on support for devices with multiple Universal Subscriber Identity Modules (USIMs)Under change control S1
See details Internal Common IMS 2G 3G LTE 5G
22.873TRStudy on evolution of the IP Multimedia Subsystem (IMS) multimedia telephony serviceUnder change control S1
See details Internal Common IMS 2G 3G LTE 5G
22.892TRStudy on IMS Centralized Services (ICS) requirementsUnder change control S1
See details Internal Common IMS 2G 3G LTE 5G
22.894TRFeasibility study on IP Multimedia Subsystem (IMS) network-independent public user identitiesUnder change control S1
See details Internal Common IMS 2G 3G LTE 5G
22.906TRStudy on IMS based peer-to-peer content distribution servicesUnder change control S1
See details Internal Common IMS 2G 3G LTE 5G
22.940TRIP Multimedia Subsystem (IMS) messagingUnder change control S1
See details Internal Common IMS 2G 3G LTE 5G
22.948TRStudy of requirements of IP-Multimedia Subsystem (IMS) convergent multimedia conferencingUnder change control S1
See details Internal Common IMS 2G 3G LTE 5G
22.973TRIMS Multimedia Telephony service; and supplementary servicesUnder change control S1
See details Internal Common IMS 2G 3G LTE 5G
22.979TRFeasibility study on combined Circuit Switched (CS) calls and IP Multimedia Subsystem (IMS) sessionsUnder change control S1
See details Internal Common IMS 2G 3G LTE 5G
23.167TSIP Multimedia Subsystem (IMS) emergency sessionsUnder change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.206TSVoice Call Continuity (VCC) between Circuit Switched (CS) and IP Multimedia Subsystem (IMS); Stage 2Under 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
23.237TSIP Multimedia Subsystem (IMS) Service Continuity; Stage 2Under change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.279TSCombining Circuit Switched (CS) and IP Multimedia Subsystem (IMS) services; Stage 2Under change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.292TSIP Multimedia Subsystem (IMS) centralized services; Stage 2Under change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.334TSIP Multimedia Subsystem (IMS) Application Level Gateway (IMS-ALG) - IMS Access Gateway (IMS-AGW) interface: Procedures descriptionsUnder change control C4
See details Internal Common IMS 2G 3G LTE 5G
23.380TSIMS Restoration ProceduresUnder change control C4
See details Internal Common IMS 2G 3G LTE 5G
23.406TSTISPAN; IP Multimedia Subsystem (IMS); Stage 2 description [3GPP TS 23.228 v7.2.0, modified]Under change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.417TSTISPAN; IP Multimedia Subsystem (IMS); Functional architectureUnder change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.506TSTISPAN; IP Multimedia Subsystem (IMS); Stage 2 description [3GPP TS 23.228 Release 7, modified]Under change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.517TSTISPAN; IP Multimedia Subsystem (IMS); Functional architectureUnder change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.521TSTelecommunications and Internet converged Services and Protocols for Advanced Networks (TISPAN); Support of Short Message Service (SMS) over NGN IMS subsystem; Stage 2; [Endorsement of 3GPP TS 23.204 Release 7]Under change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.700-10TRStudy on enhanced IP Multimedia Subsystem (IMS) to 5GC integration Phase 2; CT WG1 aspectsUnder change control C1
See details Internal Common IMS 2G 3G LTE 5G
23.700-11TRStudy on enhanced IP Multimedia Subsystem (IMS) to 5GC integration Phase 2; CT WG3 aspectsUnder change control C3
See details Internal Common IMS 2G 3G LTE 5G
23.700-12TRStudy on enhanced IP Multimedia Subsystem (IMS) to 5GC integration Phase 2; CT WG4 aspectsUnder change control C4
See details Internal Common IMS 2G 3G LTE 5G
23.700-75TRStudy on Multimedia Priority Service (MPS) for IMS Messaging and SMS servicesUnder change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.701TRStudy on Web Real Time Communication (WebRTC) access to IP Multimedia Subsystem (IMS); Stage 2Under change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.706TRStudy on enhancements to Web Real Time Communication (WebRTC) access to IP Multimedia Subsystem (IMS); Stage 2Under change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.771TRStudy on system impacts of IP Multimedia Subsystem (IMS) emergency sessions over Wireless Local Area Network (WLAN)Under change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.794TRStudy on enhanced IP Multimedia Subsystem (IMS) to 5GC integrationUnder change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.806TRVoice call continuity between Circuit Switched (CS) and IP Multimedia Subsystem (IMS) StudyUnder change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.812TRFeasibility study on IP Multimedia Subsystem (IMS) evolutionUnder change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.815TRCharging implications of IMS architectureUnder change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.816TRIdentification of communication services in IMSUnder change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.820TRStudy of IMS restoration proceduresUnder change control C4
See details Internal Common IMS 2G 3G LTE 5G
23.831TRIP Multimedia Subsystem (IMS) service continuity; Inter-UE transfer enhancements; Stage 2Under change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.832TRIP Multimedia Subsystem (IMS) aspects of architecture for Home Node B (HNB); Stage 2Under change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.838TRIP Multimedia Subsystem (IMS) service continuity enhancements; Service, policy and interaction; Stage 2Under change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.842TRStudy on network provided location information to the IP Multimedia Subsystem (IMS)Under change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.844TRFeasibility study on IP Multimedia Subsystem (IMS) based peer-to-peer content distribution services; Stage 2Under change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.847TREnhancements to IMS service functionalities facilitating multicast bearer servicesUnder change control S2
See details Internal Common IMS 2G 3G LTE 5G
23.849TRStudy on Stage 2 aspects of Optimised Service Charging and Allocation of Resources (OSCAR) in the IP Multimedia Subsystem (IMS) whilst roamingUnder change control S2
See details Internal Common IMS 2G 3G LTE 5G