The SOP Class Extended Negotiation allows, at Association establishment, peer DICOM AEs to exchange application Association information defined by specific SOP Classes.
This is achieved by defining the Service-class-application-information field. The Service-class-application-information field is used to define support for relational-retrievals.
[pic] Figure C.5-2 AN EXAMPLE OF THE RETRIEVE (C-GET) NEGOTIATION
Extended negotiation for SOP Classes based on the retrieval services which include C-GET operations is identical to the negotiation defined for C-MOVE which is defined in Section C.5.2.1 of this Annex.
Extended negotiation for the SOP Classes of the Storage Service Class (for the C-STORE sub-operation) is defined in Annex B.