IMS system definition for intersystem communication

The IMS ISC-related macros that are used in IMS system definition are the COMM, NAME, SUBPOOL, TERMINAL, TYPE, and VTAMPOOL macros.

The COMM macro
The COMM macro identifies the IMS system.
The NAME macro
The NAME macro defines the logical terminal names associated with the subpool. Multiple LTERMs can be defined per subpool.
The SUBPOOL macro
A SUBPOOL macro is required for each session to the remote system.
The TERMINAL macro
The TERMINAL macro identifies the remote CICS system to IMS. It is comparable to DEFINE CONNECTION in CICS.
The TYPE macro
The TYPE macro specifies the terminal type. Parameters of the TERMINAL macro can also be specified in the TYPE macro if they are common to all the terminals defined for this type.
The VTAMPOOL macro
The VTAMPOOL macro heads the list of SUBPOOL macros that define the individual sessions to the remote system.

Parent topic: Adding communications support between systems