Technical Overview › Operation of the System › Interface Control

Interface Control

The system operator (and any privileged CA Spool terminal user) also controls the various interfaces, and can issue commands to activate and deactivate them.

These interfaces are:

• Network Interface, used by CA Spool to communicate with 3270 display terminals and printers
• Virtual Printer Interface which is a part of the VTAM Interface
• XFER File Transfer Interface, used by CA Spool to transfer CA Spool files to the primary spooling system JES2 or JES3, and vice versa. This capability also includes the SUBMIT function

  This interface consists of two logical parts, which can be controlled simultaneously or separately. This allows, for example, file transfer from JES2 or JES3 to CA Spool while the internal reader (INTRDR) is being drained.

• SUBSYS Interface, used by application programs to create or retrieve spool files through JCL statements or the ESFALLOC TSO command
• Advanced Communication Interface, used by application programs to perform a console dialog with CA Spool
• CA View interface, used to automatically back up, archive, or transfer files to CA View

If your site decides to use the CA Spool spool file Backup/Restore program, the operator must initiate program execution. Typically, this is included in the back up jobs already run at regular intervals.

The Backup/Restore program runs simultaneously with normal CA Spool operation.