Architectureforadistributedreal-timeaccesssystemArchitectured'unsystèmed'accèstempsréeldistribué©ISO/IEC2020INTERNATIONALSTANDARDISO/IEC24643ReferencenumberISO/IEC24643:2020(E)Firstedition2020-11ISO/IEC24643:2020(E)ii©ISO/IEC2020–AllrightsreservedCOPYRIGHTPROTECTEDDOCUMENT©ISO/IEC2020Allrightsreserved.Unlessotherwisespecified,orrequiredinthecontextofitsimplementation,nopartofthispublicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO’smemberbodyinthecountryoftherequester.ISOcopyrightofficeCP401•Ch.deBlandonnet8CH-1214Vernier,GenevaPhone:+41227490111Email:copyright@iso.orgWebsite:www.iso.orgPublishedinSwitzerlandISO/IEC24643:2020(E)iii©ISO/IEC2020–AllrightsreservedContentsPage1Scope....................................................................................................................................................................12Normativereferences....................................................................................................................................13Termsanddefinitions....................................................................................................................................14Overview.............................................................................................................................................................15Functionalarchitectureofanaccesssystem.........................................................................................35.1Physicalfunctiongroup.........................................................................................................................................35.1.1Components.............................................................................................................................................35.1.2Accessobject..............