Section: 5.30.3.5 Support of emergency services in CAG cells
Content: Emergency Services are supported in CAG cells, for UEs supporting CAG, whether normally registered or emergency registered as described in clause 5.16.4 and in clause 4.13.4 of TS 23.502[ Procedures for the 5G System (5GS) ]  [3]. A UE may camp on an acceptable CAG cell in limited service state as specified in TS 23.122[ Non-Access-Stratum (NAS) functions related to Mobile Station (MS) in idle mode ]  [17] and TS 38.304[ NR; User Equipment (UE) procedures in Idle mode and in RRC Inactive state ]  [50], based on operator policy defined in TS 38.300[ NR; NR and NG-RAN Overall description; Stage-2 ]  [27]. NOTE: Support for Emergency services requires each cell with a Cell Identity associated with PLMNs or PNI-NPNs to only be connected to AMFs that supports emergency services. The UE shall select a PLMN (of a CAG cell or non-CAG cell), as described in TS 23.122[ Non-Access-Stratum (NAS) functions related to Mobile Station (MS) in idle mode ]  [17] and TS 23.167[ IP Multimedia Subsystem (IMS) emergency sessions ]  [18], when initiating emergency services from limited service state. During handover to a CAG cell, if the UE is not authorized to access the target CAG cell as described in clause 5.30.3.4 and has emergency services, the target NG-RAN node only accepts the emergency PDU Session and the target AMF releases the non-emergency PDU Sessions that were not accepted by the NG-RAN node. Upon completion of handover the UE behave as emergency registered.