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.

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19 - 20 - 21 - 22 - 23 - 24 - 25 - 26 - 27 - 28 - 29 - 30 - 31 - 32 - 33

MIL-STD-188-154A

Transmission

Access

Transmission

Access

Matrix Switch

Dist

XC Frame

- Horiz

Primary Ports

Dist XC Frame

- Horiz

Alternate

Port

Access may be integrated into equipment

Circuit Access Point

XC Cross-Connect

FIGURE 4. Matrix switch and required access points.

5.3.1.4 Multiplexers. The type of multiplexer used on a circuit depends on the circuit characteristics and the eventual routing of the circuit.

5.3.1.4.1 Multiplexing. Low speed circuits may be routed to multiplexer equipment to be combined with other circuits. The circuit shall be wired from the distribution frame to the circuit access point associated with the proper port of

the multiplexer. Provisions shall be made for testing both the circuit traffic and the physical path. The output of the multiplexer shall be wired to a distribution frame for connection to a higher level multiplexer, matrix switch, cable access equipment, commercial access equipment, or interface equipment for distribution to a local user. Figure 5 shows the normal circuit flow and access required for connection to a multiplexer.