Question: In a 5G network, when sending an EVENT DOWNLOAD – Slices status Envelope from the Mobile Equipment (ME) to the Universal Integrated Circuit Card (UICC), what is the required setting for the 'Device identities' in the command parameters/data?
Option 1: Source: UICC; Destination: Network
Option 2: Source: Network; Destination: ME
Option 3: Source: Network; Destination: UICC
Option 4: Source: ME; Destination: Network
Explanation: According to the specifications for EVENT DOWNLOAD – Slices status, when the Mobile Equipment (ME) sends an Envelope to the UICC regarding slices status changes, it is essential that the device identities are set correctly to indicate the origin and target of this update. Setting 'Source: Network' informs the UICC that the update originates from the network's side, while 'Destination: UICC' clearly directs this update to the UICC for appropriate handling and storage. This setting ensures seamless communication between the network (via ME) and the UICC, facilitating accurate slices status management.