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4 specifications found, displaying 1 to 4
Specification NumberTypeTitleStatusPrimary Responsible Group 
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
33.141TSPresence service; SecurityUnder change control S3
See details Internal Common IMS 2G 3G LTE 5G
33.203TS3G security; Access security for IP-based servicesUnder change control S3
See details Internal Common IMS 2G 3G LTE 5G
33.978TRSecurity aspects of early IP Multimedia Subsystem (IMS)Under change control S3
See details Internal Common IMS 2G 3G LTE 5G