"Couplers"

Users can be coupled to a UTM application in the following ways:

• Terminal coupling (Lterm/Tpool)
  If this type of coupling is used, the coupler can be either an Lterm or a Tpool.
  If the UTM application has been generated without users then openUTM implicitly creates a user. This implicitly generated user "inherits" the Kset of the Lterm or Tpool. Otherwise, the user signed on via the Pterm or Tpool (and thus also that user's Kset) is used.
  If this type of coupling is used, the coupler can be protected by the lock used by the Lterm or Tpool (LOCK parameter in the LTERM or TPOOL generation statement).
  The coupler's authorization is defined in the Kset of the Lterm or Tpool (KSET parameter in the LTERM or TPOOL generation statement).

• Upic/Appli coupling (Lterm/Tpool)
  Here again the coupler can be either an Lterm, in which case the associated Pterm has the PTYPE Upic or Appli, or a Tpool with PTYPE Upic or Appli.
  If the coupler is an Lterm, openUTM implicitly creates a user. This implicitly generated user "inherits" the Lterm's Kset.
  If the coupler is a Tpool, openUTM implicitly creates a user. These Tpool users inherit the USER-KSET of the Tpool if a USER-KSET is present. Otherwise they inherit the Tpool's Kset. If a user is specified when the connection (PTYPE=Appli) or conversation (PTYPE=Upic) is established, then this user and the associated Kset are used.
  If this type of coupling is used, the coupler can be protected by the lock used by the Lterm or Tpool (LOCK parameter in the LTERM or TPOOL generation statement).
  The coupler's authorization is defined in the Kset of the Lterm or Tpool (KSET parameter in the LTERM or TPOOL generation statement).

• LU6.1 coupling (Lpap)
  For each Lses belonging to an Lpap, openUTM implicitly creates an Lses user who inherits the Lpap's Kset.
  If this type of coupling is used it is not possible to protect the coupler itself.
  The coupler's authorization is also defined by the Kset of the Lpap (KSET parameter in the LPAP generation statement).

• OSI-TP coupling (Osi-Lpap)
  For each OSI Association that belongs to an Osi-Lpap, openUTM implicitly creates an Association User. This user inherits the ASS-KSET of the Osi-Lpap if an ASS-KSET is present. Otherwise the user inherits the Osi-Lpap's Kset. When an OSI Association is set up, openUTM initially assigns the Osi-Lpap the Association User generated for the association. However, if a user is specified when a conversation is set up, the specified user is assigned to the Osi-Lpap instead.
  If this type of coupling is used it is not possible to protect the coupler itself. The coupler's authorization is defined by the Kset of the Osi-Lpap (KSET parameter in the OSI-LPAP generation statement).