The Element Management System (EMS) is responsible for all systems that provide direct control and management of DISN elements. The EMS is implemented through a flexible, reliable, and globally distributed architecture to support network operations at the Global and Theater NetOps Centers. The EMS collects, consolidates, and normalizes fault, performance, and configuration data from network elements and transmits the data to the Network Management System (NMS).
The EMS also includes the Data Communications Network (DCN). The DCN is a global, dedicated, out-of-band private network with secure dial back-up capability for transporting command and control data between the DISN managed elements and the EMS. The DCN also provides all interconnectivity for the DISN OSS applications and network operators.