The CATC/2WSI two way intelligent interface allows control of, and text feedback from, subsystems such as hard disc servers, lighting controls and XM receivers to be displayed on all attached CATCs within a system. The CATC/2WSI can be flash upgraded to support more subsystems in the future, without the need to replace the unit. The CATC/2WSI is powered from the Audioaccess keypad bus but can be remotely powered from any commercially available 12 volt power supply. One interface is required per subsystem but can broadcast the feedback information to an unlimited number of touch screens, allowing the system integrator to easily add multiple touch screens to a system without any unnecessary work.