Which communication system is referred to as the Common User Digital Information Exchange Subsystem?

The Common User Digital Information Exchange Subsystem is specifically known as CUDIXS. This system facilitates the exchange of digital data communications among various naval vessels and shore commands, offering an essential link for sharing operational and logistical information. CUDIXS enhances the efficiency of military operations by allowing users to send and receive messages, reports, and other data in a standardized digital format.

This system's capability to process and manage a high volume of messages in a user-friendly way makes it critical to naval operations. In contrast, the other systems listed, while significant in their own right, serve different functions within the broader realm of military communications. For example, SATHICOM is known for satellite communications, DAMA deals with demand assignment multiple access, and DSCS refers to the Defense Satellite Communications System, each focusing on different aspects of communication technology and protocols rather than specifically providing a common digital exchange platform like CUDIXS does.