Enforcement at AMF for Emergency PDU
During the triggering process of enforcement for a RAT or a core restriction type, the AMF performs the following actions:
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The AMF starts the deregistration process toward the PCF or the UDM, when the UE has an emergency PDU established before.
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The AMF initiates the release only for non-emergency PDU, whereas the emergency PDU remains active.
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The AMF moves the UE as an option of emergency registered.