The SCU uses the N-ACTION to request the SCP to print all the films belonging to the identified film session.
The SCP shall make a copy of the “working” Basic Film Session SOP Instance hierarchy, which contains all the information to control the Print Process. Hence the SCU may further update the “working” SOP Instance hierarchy without affecting the result of previous print requests. The execution of the Print Process is monitored by the Print Job SOP Instance (if supported by the SCP) and the Printer SOP Class.
If the SCP supports the Print Job SOP Class then the SCP shall create a Print Job SOP Instance, which contains the copy of the “working” Basic Film Session SOP Instance hierarchy and shall return the Print Job SOP Class/Instance UID pair in the Attribute Referenced Print Job Sequence of the Action Reply argument.
Note: If the SCP supports the Print Job SOP Class, it creates a single Print Job for all the films of the film session.
The SCP shall return the status code of the requested operation. The meaning of success, warning, and failure status codes is defined in Section H.2.5.
The N-ACTION shall be issued only if the Basic Film Session SOP Instance hierarchy contains at least one Film Box SOP Instance.