RPG invocation

     C*..1....:....2....:....3....:....4....:....5....:....6....:....7..
     C                     CALLP     MQCONN(QMNAME : HCONN : CMPCOD :
     C                                      REASON)

The prototype definition for the call is:

     D*..1....:....2....:....3....:....4....:....5....:....6....:....7..
     DMQCONN           PR                  EXTPROC('MQCONN')
     D* Name of queue manager
     D QMNAME                        48A
     D* Connection handle
     D HCONN                         10I 0
     D* Completion code
     D CMPCOD                        10I 0
     D* Reason code qualifying CMPCOD
     D REASON                        10I 0