DDN (Defense Data Network) New User Guide
Stephen C. Dennett, Elizabeth J. Feinler, Francine Perillo, Mary K. Stahl, Carol Ward · 1987
NMC services include remote status monitoring, coordination of network outage troubleshooting " efforts, and 24 hour per day/7 day per week technical assistance to users for network problems.The NMCs typically work on backbone-related outages consisting of node and circuit problems, and provide help in determining whether or not host connectivity problems are network-related.Your Host Administrator will contact the appropriate NMC for all network hardware problems, hardware field service, problems with host interfaces, or suspected node software problems.6.2.2 NMC