Fiber Optic Cable Routing and Marking

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					Fiber Optic Cable Routing and Marking
Cross-connect fiber cables are routed between two termination points
using the standoffs, brackets, and other wire management devices.
Cross connect wiring requires extra care in handling to maintain
performance characteristics. Best practices that are using in telephone-
grade cross-connects are not at all appropriate for the higher
performance categories of LAN wiring. A good example: sharply bent
jumpers are a common practice when they are wrapped around wire
management brackets. But in fiber cable management, these sharp bends may
be less than the minimum bend radius recommended in TIA/EIA-568-B.
Various fiber cable routing schemes help achieve redundancy in SONET
networks. Trunks are the main fiber cables that can carry hundreds of
fiber strands owned by carries.
Laterals are the fiber cables from the customer premises to the nearest
splice point on the cable trunk. Within cities, laterals can be as short
as a few meters or could extend several kilometers in suburban and rural
areas.
Aerial installation on existing poles is the most cost-effective
installation method and offers moderate reliability. Rules and procedures
for licensed carriers and fiber installers to access existing utility and
telephone poles are well established by regulatory bodies. Many
regulatory bodies require carriers to install extra conduits that are
accessible by other licensed carriers or fiber installers.
In order to improve the availability of cable telephony systems, some
operators are installing redundant node receivers and transmitters, and
connecting them to the headend using fiber optic cable having diverse
routing.
Outdoor hardware consists of a line of splice closures, wall-mountable
distribution centers, and pedestal-mountable cross-connects. These units
provide environmental protection for splices, connectors, and jumpers in
the outside plant environment, often required in industrial and other
special applications.
In some indoor circumstances, space is limited for mounting hardware.
Specially designed furcation (or fan-out) kits provide protection and
pull-out strength for bare fibers, and they are direct connectorized.
These are most useful when the fiber counts are low and all of the fibers
will be patched into other hardware or electronics in the same are.
Colin Yao is an expert on fiber optic communication technology and
products. Learn more about Corning wall mount fiber patch panel, wall
mount fiber enclosure and wall mount fiber distribution on Fiber Optics
For Sale Co. web site.

				
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posted:10/11/2010
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