Section: 6.2.28 NSACF
Content: The Network Slice Admission Control Function (NSACF) supports the following functionality: - Support of monitoring and controlling the number of registered UEs per network slice. - Support of monitoring and controlling the number of UEs with at least one PDU Session/PDN Connection per network slice in case of EPC interworking. - Support of monitoring and controlling the number of established PDU Sessions per network slice. - Support of event based Network Slice status notification and reports to a consumer NF. - Acting as a Centralized NSACF in PLMNs deploying a centralized architecture as described in clause 5.15.11.0. - Support of different type of NSAC modes for roaming UEs for the number of UEs per network slice. - Support of different type of NSAC modes for roaming UEs for the number of PDU Sessions per network slice. - Acting as a Primary NSACF in PLMNs deploying a hierarchal architecture as described in clause 5.15.11.0. The details of the NSACF functionality are defined in clause 5.15.11.