The IBM 3170 Controllers are what drive the CoAx terminals, including the z/OS Consoles.
These are customized so that some CoAx ports can have two sessions. Any replacement of these
devices should be customized with the same configurations, the only allowable difference being
Prod LPAR Configuration
Test LPAR Configuration
The normal terminal usage is:
To reestablish normal console environment
To turn a TSO/CICS address to an OS Console