UDR – Unified Data Repository
The UDR is a converged repository of subscriber information and can be used to service a number of network functions. For example, the 5G UDM (Unified Data Management) can use the UDR to store and retrieve subscription data. Alternatively, the PCF (Policy Control Function) can use the UDR to store and retrieve policy related data. From a CIoT perspective, the NEF (Network Exposure Function) may use the UDR to store subscriber related data that is permitted to be exposed to 3rd party applications.
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