what is a dsn army

The Defense Switched Network (DSN) is a primary information transfer network for the Defense Information Systems Network (DISN) of the United States Department of Defense. It is a group of government-owned and leased physical cables that interconnect everything and is designed to support the Department of Defense and U.S. government to allow users to call from post to post or other military branches within DOD. The DSN provides nonsecure direct-distance dialing service worldwide through a system of government-owned and-leased automatic switching facilities. The purpose of DSN is to handle essential command and control, operations, intelligence, logistical, diplomatic, and administrative traffic. Soldiers can employ this communication system at any time, whether during peacetime, preattack, or in times of crisis. The DSN is still available to DOD because individuals are supposed to use the network when making a long-distance telephone call, and individuals should still use the network because doing so saves the government money.