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TIA-758

Revision A, May 5, 2004

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Customer-owned Outside Plant Telecommunications Infrastructure Standard



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Referenced Items:

ANSI O5.1
ICEA S-84-608
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Product Details:


Description / Abstract:

Applicability

This Standard specifies minimum requirements for customer-owned OSP telecommunications facilities in a campus environment. This standard specifies the cabling, pathways and spaces to support the cabling.

Customer-owned OSP cabling extends between separated structures including the terminating connecting hardware at or within the structures. The OSP pathway includes the pathway through the point of entry into the building space. Customer-owned OSP pathways may include aerial, direct-buried, underground (e.g., duct), and tunnel distribution techniques. Customer-owned OSP pathways and spaces specified by this Standard are intended to have a useful life in excess of forty (40) years.

The OSP cabling specified by this Standard is intended to support a wide range of applications (e.g., voice, data, video, alarms, environmental control, security, audio, etc.) on commercial, industrial, institutional and residential sites. The customer-owned OSP cabling specified by this Standard is intended to have a useful life in excess of thirty (30) years.

This standard applies to all campuses, regardless of the size or population.

Customer-owned OSP cabling infrastructure

Pathways and spaces

Many types of pathways and spaces may be required to route cabling between campus buildings, structures, or outdoor telecommunications pedestal or cabinets. Figure 1 illustrates a variety of customer-owned OSP pathways and spaces. There are two basic types of cable pathway systems: underground and aerial (with exceptions for surface, above ground, conduit following the route of another above ground utility).

Underground pathways and spaces may be dedicated for cable placement (e.g., direct-buried cable; buried duct/conduit; maintenance holes; handholes; shared spaces such as a utility tunnel providing other services).

Aerial pathways and spaces may consist of poles; messenger wire; anchoring guy wires; splice closures and terminals. Self-supporting cables, which include a messenger wire, may also be used.

Customer-owned OSP cabling

Customer-owned OSP cabling consists of recognized cable terminated with conforming connecting hardware and protective devices, as required. Customer-owned OSP connecting hardware may be located on the exterior or interior of a building, or in an outdoor telecommunications pedestal or cabinet. Figure 2 illustrates a typical OSP cabling layout.

NOTES

1 - The customer-owned OSP link can have intermediate splices (e.g., reducing a copper twisted-pair feeder cable to distribution cables).

2 - Optical fiber cables may pass through a building entrance facility as a part of the cable route. For example figure 2 shows a cable from building "C" passing through the building "A" entrance splice point location to the destination at the outdoor telecommunications pedestal "D".