DATA COMMUNICATION HUB
Same communication hub can be uses with different names in different stages with slight modifications. These are...
Main data connection hub is the universal control centers of the system. They have the entire control for all the platform data hubs connected to it. All platform data hubs are connected and will be monitored using the main data hub.
Platform data hubs are responsible for each platform in the station. There will be one PDCH for every platform in the station. All the display devices in a particular platform will be connected to its particular platform data hub.
By using of led status panel we can watch the link status of the communication hub and LCD panel used to indicate whether this hub acts as a MDCH or PDCH.