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2 specifications found, displaying 1 to 2
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
22.278TSService requirements for the Evolved Packet System (EPS)Under change control S1
See details Internal Common IMS 2G 3G LTE 5G