Foreword1 Scope2 References3 Definitions, symbols and abbreviations4 General5 Functional entities6 Common procedures6.1 Introduction6.2 MCData client procedures6.3 MCData server procedures6.4 Handling of MIME bodies in a SIP message6.5 Confidentiality and Integrity Protection of sensitive XML content6.6 Confidentiality and Integrity Protection of TLV messages6.7 Stored files operational procedures6.8 Procedures at the MCData gateway7 Registration and service authorisation8 Affiliation9 Short Data Service (SDS)9.1 General9.2 On-network SDS9.3 Off-network SDS10 File Distribution (FD)11 Transmission and Reception Control12 Dispositions and Notifications13 Communication Release14 Enhanced Status (ES)15 Message Formats16 Emergency Alert17 Location procedures18 Pre-established session19 MBMS transmission usage procedure20 IP Connectivity21 MCData Message Store22 Functional alias23 Regroup using a preconfigured groupB.1 GeneralB.2 Definition of media feature tag for Mission Critical Data (MCData) communications Short Data Service (SDS)B.3 Definition of media feature tag for Mission Critical Data (MCData) communications File Distribution (FD)B.4 Definition of media feature tag for Mission Critical Data (MCData) communications IP Connectivity (IPCONN)C.1 GeneralC.2 Definition of ICSI value for the Mission Critical Data (MCData) serviceC.3 Definition of ICSI value for the Mission Critical Data (MCData) communications Short Data Service (SDS)C.4 Definition of ICSI value for Mission Critical Data (MCData) communications File Distribution (FD)C.5 Definition of ICSI value for Mission Critical Data (MCData) communications IP Connectivity (IPCONN)D.1 XML schema for transporting MCData identities and general services informationD.2 VoidD.3 XML schema for MCData (de)-affiliation requestsD.4 XML schema for MCData location informationD.5 XML schema for MBMS usage informationD.6 XML schema for regroup using preconfigured groupD.7 XML schema for control of communications storageE.1 MIME type for transporting MCData signalling contentE.2 MIME type for transporting MCData payload contentF.1 GeneralF.2 On-network timersF.3 Off-network timersG.1 GeneralG.2 On-network countersG.3 Off-network countersG.4 On-network emergency related statesH.1 Info package for indication of communication releaseI.1 GeneralI.3 Mapping of EPS-specific terms to 5GSI.2 Aspects not applicable to 5GS G.2 On-network counters 24.2823GPPMission Critical Data (MCData) signalling controlProtocol specificationRelease 18TS Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM None defined.