To access back-end applications, FEPI has VTAM® secondary logical unit (SLU) support, so that CICS® FEPI applications can simulate certain logical unit (LU) types. FEPI uses VTAM program-to-program support to provide this function, and to communicate between front-end and back-end applications.
FEPI provides simulation support for two families of terminals. The names SLU2 and SLU P are used to identify the two types of support:
Data-stream-level and specialized-level commands can be used with both families of terminals, but the high-level commands, which use formatted data, are only for SLU2.
The mode of a conversation must be either SLU2 or SLU P; it cannot be mixed. For SLU2 conversations, formatted data or data stream data can be used, but cannot be mixed in the same conversation. The mode and data type are controlled by the pool used, which is set up by the system programmer.
These terminals are supported only when they are used to communicate with CICS or IMS systems.
[[ Contents Previous Page | Next Page Index ]]