Transmission Monitoring and Control (TRAMCON) segmentation plan for the DCS (Defense Communications System) digital transmission network

The Transmission Monitoring and Control (TRACON) application criteria for the Defense Communications System (DCS) Digital Transmission Network and the segmentation design for Europe are documented by a master terminal which receives transmission equipment and station data from Intelligent Remote Units located at all nodes of the segment. The considerations influencing the design are described; network geographical-link distribution, Facility Control Office locations, backup mastership availability, allowable number of link terminations per segment and the ability to maintain node monitoring and reporting in spite of possible link outages. In many cases, link outages can be circumvented by judicious placement of primary and alternate masters. Since changes are to be expected in FCO designations and in segment configuration, future drawing revisions are likely.