MIL-STD-188-154-SUP Subsystem, Equipment, and Interface Standards for Common Long Haul and Tactical Telecommunications Control FacilitiesThis standard establishes physical and functional interface requirements for long haul and tactical telecommunications control facilities formerly technical control facilities in the Department of Defense DoD. As used in this standard, the term telecommunications control facility TCF includes patch and test facilities PTFs and interfaces to locations that provide centralized monitoring and control functions for other telecommunication locations.

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MIL-STD-188-154A

4.2.1 General configuration. The electrical configuration of all TCFs within a given system shall be the same whether the facility is located at a transmission nodal point or terminal point. However, the electrical and physical configuration of TCFs serving long haul and tactical systems may differ due to system missions and space limitations.

4.2.1.1 Electrical configuration. Figure 1 illustrates the prescribed electrical configuration for a modern digital TCF. The configuration of equipment illustrated in this figure shows the interrelationship among major equipment and patching facilities and the signal flow involved in the overall telecommunications control function. TCFs may have some or all functions automated or remotely controlled. This is a design objective for long haul TCFs and should be developed for both long haul and tactical environments. Electronic equipment may combine several telecommunications control functions in one physical unit.

4.2.1.2 Physical configuration. TCF equipment and facilities shall be configured to make effective use of available space while allowing for human engineering considerations (see 4.2.6), cost, technical considerations, and expansion capabilities.