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4 specifications found, displaying 1 to 4
Specification NumberTypeTitleStatusPrimary Responsible Group 
23.228TSIP Multimedia Subsystem (IMS); 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
24.229TSIP multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3Under change control C1
See details Internal Common IMS 2G 3G LTE 5G
24.279TSCombining Circuit Switched (CS) and IP Multimedia Subsystem (IMS) services; Stage 3Under change control C1
See details Internal Common IMS 2G 3G LTE 5G