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4 specifications found, displaying 1 to 4
Specification NumberTypeTitleStatusPrimary Responsible Group 
22.173TSIP Multimedia Core Network Subsystem (IMS) Multimedia Telephony Service and supplementary services; Stage 1Under change control S1
See details Internal Common IMS 2G 3G LTE 5G
22.903TRStudy on Videotelephony teleserviceUnder change control S1
See details Internal Common IMS 2G 3G LTE 5G
22.973TRIMS Multimedia Telephony service; and supplementary servicesUnder change control S1
See details Internal Common IMS 2G 3G LTE 5G
24.173TSIMS Multimedia telephony communication service and supplementary services; Stage 3Under change control C1
See details Internal Common IMS 2G 3G LTE 5G