Automatic Digital Network

Overview
The Automatic Digital Network system (known as AUTODIN or ADNS) is a legacy data communications service in the U.S. Department of Defense. AUTODIN originally consisted of numerous AUTODIN Switching Centers (ASCs) located in the United States and in countries such as England and Japan. AUTODIN Switching Centers have been replaced by various hardware/software combinations. All but one of the AUTODIN Switching Centers had been shut down. The intention is to transition secure messaging traffic to the Defense Message System.