STORAGE-SCP waits in the background for connections, will accept associations with Presentation Contexts for SOP Classes of the Storage Service Class and Hanging Protocol Storage Service Class, and will store the received instances to the local database where they may subsequently be listed and viewed through the user interface.
STORAGE-SCU is activated through the user interface when a user selects instances from the local database, or the currently displayed instance, and requests that they be sent to a remote AE (selected from a pre-configured list).
FIND-SCU is activated in the background when images for a study are received, to query for matching Hanging Protocols if an appropriate Hanging Protocol Instance is not available in the local database.
MOVE-SCU is activated in the background, to retrieve Hanging Protocol Instances identified in the query results returned to the FIND-SCU. A connection to the remote AE is established to initiate and monitor the retrieval, and the STORAGE-SCP AE receives the retrieved instances.