The EXCI CALL interface
The EXCI CALL interface consists of six commands.
The commands allow you to:
- Allocate and open sessions to a CICS® system from non-CICS programs running under MVS™
- Issue distributed program link (DPL) requests on these sessions from the non-CICS programs
- Close and deallocate sessions on completion of DPL requests.
The six EXCI commands are:
- Initialize_User
- Allocate_Pipe
- Open_Pipe
- DPL_Request
- Close_Pipe
- Deallocate_Pipe
The application program stub, DFHXCSTB: The EXCI commands invoke the external CICS interface via an application programming stub provided by CICS, called DFHXCSTB. You must include this stub when you link-edit your non-CICS program.