For on-line communication the DIMSE Services allow a DICOM Application Entity to invoke an operation or notification across a network or a point-to-point interface. DIMSE Services are defined in PS 3.7.
For media storage interchange, Media Storage Services allow a DICOM Application Entity to invoke media storage related operations.
Media Storage Services are discussed in PS 3.10.
DIMSE-C Services are services applicable only to a Composite IOD. DIMSE-C provides only operation services.
DIMSE-N Services are services applicable only to a Normalized IOD. DIMSE-N provides both operation and notification services.