Exit routines

You can customize ETO with a variety of exit routines delivered with IMS.

You can use the following exit routines to customize ETO:
  • Initialization exit routine (DFSINTX0)
  • Logon exit routine (DFSLGNX0)
  • Logoff exit routine (DFSLGFX0)
  • Signon exit routine (DFSSGNX0)
  • Signoff exit routine (DFSSGFX0)
  • Destination Creation exit routine (DFSINSX0)
  • Greetings Message exit routine (DFSGMSG0)

If ETO is enabled, these exit routines are loaded during IMS initialization. All non-MSC and non-LU 6.2 VTAM® terminals (static or dynamic) can use these exit routines.

You can code these ETO exit routines with a wide range of processing logic for any of the following purposes:
  • Enforcing naming conventions
  • Selecting user queues
  • Overriding terminal characteristics, such as screen size
  • Enhancing security by limiting access to IMS terminals
  • Overriding security by allowing signon without using a security product, such as RACF®
  • Selecting operational parameters, such as timeout values