Additional Topics > Medical Imaging in IDL > Using IDL DICOM Network Services > Starting the Network Services Utility

# Starting the Network Services Utility

The DICOM Network Services utility allows you to create and store Application Entity definitions in a local configuration file or a system configuration file. This distinction is only required when you define an Application Entity associated with the Storage SCP service, or configure properties of this service. This information must be stored in the system configuration file, which requires starting the utility with a special SYSTEM keyword. Application Entities using other service types are typically defined in the local configuration file (available when the utility is started without any keywords). When started in this manner, the utility also provides access to query, retrieve and send operations. See the following section for details on local and system modes.