Intersystem communication (ISC)

CICS® intersystem communication (ISC) allows the following:
  • CICS-to-CICS communication
  • CICS-to-IMS communication
  • CICS-to-LUTYPE6.2 terminal or application communication.

These can be used simultaneously in the same or a different MVS image. ISC can use z/OS® Communications Server LU6.1 or LU6.2 (LU6.2 is preferred for CICS operation). For information about these methods of communication, see the Getting started with intercommunication.

The facilities provided by ISC include:
  • Transaction routing
  • Distributed transaction processing
  • Function shipping
  • Asynchronous processing
  • Distributed program link
  • SAA Communications interface.

For information about the design and operation of intersystem communication, see z/OS Communications Server LU6.2. For descriptions of the facilities provided by ISC, see Transaction routing, Distributed transaction processing, Function shipping, and SAA Communications and Resource Recovery interfaces.