Techniques for automatically designing an application-requirement based configuration for a distributed computing system are provided. Bar code information is used to adjust internal image-forming device operational parameters in order to maximize image and print quality. The gaze detection coordinate system allows for determination of a gaze vector from each eye based on data representing glints on the user eye, or a combination of image and glint data. In an application to a network requiring the TSI function, the switch of the OC-12IF circuit pack performs only the adddrop multiplex operation between the signals inputoutput by the high-speed transmission lines and the ADM circuit pack, and the switch on the ADM circuit pack performs the TSI operation.