: Vertical or horizontal conduits, shafts, and sleeves linking the Entrance Facility, Equipment Rooms, and localized Distributor Rooms.
: Structural support installations (like cable trays, J-hooks, and underfloor ducts) that route cabling from TRs out to user workspaces. tia569e pdf work
The EF shall be the termination point for outside plant (OSP) cables and will house electrical protection devices. It must be located in a dry area near the building’s vertical backbone pathways. : Vertical or horizontal conduits, shafts, and sleeves
Spaces used to route cabling from the TR to work area outlets. This includes underfloor ducts, raised floors, conduit systems, ceiling pathways (such as J-hooks), and cable trays. : Vertical or horizontal conduits