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

Channels

Transmission

Access Trunks

Dist

Multiplexer

Primary

Alternate

XC Dist

XC Frame

Horiz

Primary

Alternate

Primary

Alternate

Primary

Alternate

Frame

Horiz XC

Access may be integrated into equipment

Circuit Access Point

Patch

XC Cross-Connect

FIGURE 6. Smart multiplexer connections.

5.3.1.5 Media access. Media access can be provided via CSU/DSU, fiber modem, commercial interface equipment, or a second-level TDM. Transmission encryption equipment may be used with any of these. Circuits shall be wired from the distribution frame to the circuit access point associated

with the media access equipment. If transmission encryption equipment is used, access points shall be available for quality monitoring and equipment patching. Circuits shall then be routed to the appropriate distribution frame or commercial POP for connection to the transmission media. Figure 7 shows the normal

circuit flow for connection through media access equipment.