Planning for IMS front-end switch

Using IMS Front-end Switch (FES) in a shared-queues environment requires one of two events.

To complete an IMS front-end switch, either:

Coding the FES exit routine (DFSFEBJ0) to route the input messages to the correct LTERM (to deliver FES reply messages correctly).
Establishing ISC sessions between IMS systems within the IMSplex (to ensure that FES input and reply messages are sent and received by any IMS).

Related reading:

For information on the FES exit routine, see IMS Version 15.5 Exit Routines.
For information on establishing ISC sessions, see IMS Version 15.5 Communications and Connections.