MIL-STD-188-154 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

w/CHANGE 1

Media (Radio, Fiber Optics, Cable, Leased Access, etc)

Bulk

Encryption

Second Level

TDM

First Level TDM, Smart Mux, or Switch

CSU/DSU

Analog/Digital

Converter

Crypto

Conditioning

Equipment

Conditioning

Equipment

Analog User High Speed

Digital User

Low Speed

Digital User

Access Points

FIGURE 1. Modern telecommunication control facility electrical configuration.

4.2.2 Installation, fabrication, and construction. The construction standards in the following paragraphs shall apply to all TCFs.

4.2.2.1 Modularity. All patching facilities, test equipment, conditioning equipment mounting shelves, and paneled equipment such as orderwire circuit terminations, alarm panels, and fuse panels shall be designed to mount in standard electrical cabinets and racks conforming to ANSI/EIA-310-D.

4.2.2.2 Physical access. Electronic equipment shall be operable in extended position (as with an extender card) for maintenance.