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ISO/IEC 24643:2020(E)
v©ISO/IEC2020–Allrightsreserved
Introduction
Technology for real‐time access control is widely used in many situations such as facility entrance
systemsinabuilding,paymentsatahotel,ATMoperationsore‐votinginanelection,etc.Theseservices
benefitfromreal‐timeaccesscontrolsystemsconnectedvianetworksandusingdatabaseinformation.
Sophisticatedcloud,virtualization,database,networkingtechnologyandservicesandtheevolutionof
authentication technology such as biometrics, NFC, QR codes usedindistributedandmodularaccess
controlsystemsenablepreviouslyunderservedusersandoperatorstoinnovatearoundnewusecases.
Forrealizingsuchreal‐timeaccesssystem,anEcmastandardECMA‐412(alsopublishedas
InternationalStandardISO/IEC20933)“Frameworkfordistributedreal‐timeaccesssystems”wasfirst
introducedin2016witha2
nd
editionfollowingin2018.Thatstandardspecifiesthereferencemodel
andcommoncontrolfunctions.Itgivesdirectionforongoinginnovationanddevelopmentoftechnology
andthesystemintegrationofdistributedreal‐timeaccesscontrolsystems.
ThisStandard specifiesthe architecture fora distributed real‐timeaccess system takingintoaccount
themanytechnologiesandtheframeworkofECMA‐412.Thearchitecturespecifiesthefunctiongroup
conceptofthesystem,thefunctionalitiesofeachfunctiongroupandtheinterfaces.Protocolsbetween
functiongroupandfunctionsareoutofthescopeofthisStandard.
This2
nd
editionintroducessomeclarificationsandeditorialimprovementstothetext.
This Ecma Standard was developed by Technical Committee 51 and wasadoptedbytheGeneral
AssemblyofJune2019.