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5 specifications found, displaying 1 to 5
Specification NumberTypeTitleStatusPrimary Responsible Group 
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
23.218TSIP Multimedia (IM) session handling; IM call model; Stage 2Under change control C1
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
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
24.503TSTISPAN; IP Multimedia Call Control Protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP) Stage 3 [3GPP TS 24.229 (Release 7), modified]Under change control C1
See details Internal Common IMS 2G 3G LTE 5G