FCC | Fiber Construction Company
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Fiber & OSP Construction Glossary

Plain-English definitions of the outside plant and fiber construction terms carriers, ISPs, and data center teams use.

Straight definitions for the outside plant (OSP) and fiber optic construction vocabulary that shows up in scopes, bids, and specs. Built for program managers and engineers who want the term explained without the fluff.

Conduit and Innerduct Dark Fiber Data Center Interconnect (DCI) Directional Boring (HDD) FTTH and FTTx Fiber Loss Budget Fusion Splicing Make-Ready Engineering Meet-Me Room (MMR) Microtrenching OTDR Testing One-Touch Make-Ready (OTMR) Outside Plant (OSP) Overlashing Strand and Lashing