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4 specifications found, displaying 1 to 4
Specification NumberTypeTitleStatusPrimary Responsible Group 
24.173TSIMS Multimedia telephony communication service and supplementary services; Stage 3Under change control C1
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
24.642TSCompletion of Communications to Busy Subscriber (CCBS) and Completion of Communications by No Reply (CCNR) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specificationUnder change control C1
See details Internal Common IMS 2G 3G LTE 5G
29.163TSInterworking between the IP Multimedia (IM) Core Network (CN) subsystem and Circuit Switched (CS) networksUnder change control C3
See details Internal Common IMS 2G 3G LTE 5G