MIL-STD-2042-2B(SH)
3. DEFINITIONS
3.1 General fiber optics terms. Definitions for general fiber optics terms used in this standard practice are in accordance with EIA/TIA-440. Definitions for other terms as they are used in this standard practice are given in the following paragraphs.
3.2 Acronyms. The following acronyms are used in this standard practice: BOF Blown optical fiber
FOCP Fiber optic cable plant
FOCT Fiber optic cable topology
FOICB Fiber optic interconnection box
TRB Tube routing box
3.3 Allocated and not used fiber. A fiber that is designated for use for a particular system, but is not being used to transmit information. Allocated and not used fibers include fibers allocated as system spare fibers, system growth fibers, and system redundant fibers.
3.4 Allocated and used fiber. A fiber that is designated and required for use for a particular system link, and is being used to transmit information. Allocated and used fibers include fibers used for normal channels, fiber for alternate channels, and fibers for non-redundant channels.
3.5 Alternate channel. The allocated and used active backup link for a normal channel.
3.6 Authorized approval. Written approval from the cognizant Government activity.
3.7 BOF bundle. A group of optical fibers within a special jacket that allows the entire bundle to be blown into a BOF tube.
3.8 BOF cable. A cable that contains one or more BOF tubes through which optical fibers or optical fiber bundles are blown.
3.9 BOF fiber. An optical fiber with a special coating that allows the fiber to be blown into a BOF tube.
3.10 BOF path. The unique assemblage of concatenated BOF tubes, which form a continuous conduit through the FOCP between two BOF end points.
3.11 BOF tube. A tube within a BOF cable through which BOF fibers or BOF
bundles are blown.
3.12 BOF tube coupler. A device used to join two BOF tubes together.
3.13 BOF tube routing box (TRB). An enclosure for holding BOF cables (trunk and local), BOF tubes (trunk and local), and tube couplers to interconnect BOF tubes.
3.14 End user equipment. Any cabinet, case, panel, or device that contains components that are either the origin or destination of an optical signal.
3.15 Fiber optic cable plant (FOCP). A subset of the FOCT that excludes local cables and their associated components. A conventional FOCP includes FOICBs, trunk cables and their associated connectors and splices. A BOF FOCP consists of FOICBs, TRBs, tube couplers, BOF trunk cables, BOF fibers, BOF bundles, tube furcation units and associated connectors and splices.
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