name: UDM
full_form: Unified Data Management
context: the UE stays on the VPLMN or non-subscribed SNPN. 5) The AMF to the UDM: If the UL NAS TRANSPORT message with an SOR transparent container is received, the AMF uses the Nudm_SDM_Info service operation to provide the received SOR transparent container to the UDM. If the HPLMN decided that the UE is to acknowledge successful security check of the received steering of roaming information in step 2, the UDM verifies that the acknowledgement is provided by the UE. The UDM shall store the "ME support of SOR-CMCI" indicator and the "ME support of SOR-SNPN-SI" indicator, if any; and 6) The UDM to the SOR-AF: Nsoraf_SoR_Info (SUPI of the UE, successful delivery, "ME support of SOR-CMCI" indicator, "ME support of SOR-SNPN-SI" indicator, if any). If the HPLMN policy for the SOR-AF invocation is present and the HPLMN UDM received and verified the UE acknowledgement in step 5, then the UDM informs the SOR-AF about successful delivery of the SOR-CMCI to the UE. The UDM shall include the "ME support
description: The Unified Data Management (UDM) is a network function responsible for managing and storing subscriber data, including steering of roaming information and security check acknowledgments. It interacts with other network functions such as the Access and Mobility Management Function (AMF) and the Steering of Roaming Application Function (SOR-AF).
explanation: The UDM is classified as a Network Function based on its role in managing subscriber data, interacting with other network functions, and performing specific operations such as storing indicators and informing the SOR-AF about successful delivery of steering of roaming information.
section_title: 6.3.2.3Steering of UE in roaming after registration / SOR-CMCI rule / match all / DL NAS transport
biotag_Context: O,B-Device,O,O,O,B-Network,O,O,O,O,O,B-Network Function,O,O,O,O,O,B-Connection,B-Protocol,O,O,O,O,B-Message,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,B-Message,O,O,O,O,O,O,O,B-Parameter,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,B-Parameter,B-Network Function,O,O,O,O,B-Device,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O
biotag_Description: O,B-Network Function,I-Network Function,I-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,I-Network Function,I-Network Function,I-Network Function,I-Network Function,O,O,O,O,O,O,B-Network Function,I-Network Function,O