Join over 70,000 structured
cabling professionals! Get the
latest cabling news delivered
straight to your inbox.
SUBSCRIBE NOW AT
Not all OSP cables are the same. Each
type is designed for a specific purpose, so there are many standards to
consider when selecting OSP cabling.
When designing a network that needs
OSP cabling, a good guide to use is
ANSI/TIA-758-B, the Customer-Owned
Outside Plant Telecommunications
Infrastructure Standard, developed
by the Telecommunications Industry
Association (TIA). It references all the
relevant standards for cabling in a
harsh environment, and also references
relevant performance standards. It also
specifies the minimum requirements
for customer-owned OSP telecommunications facilities in a campus environment, and specifies the cabling, pathways and spaces needed to support
the cabling, no matter the population
type or size.
When searching for the right OSP cable,
consider the following factors.
• National Electrical Code ratings like
CM or CMR allow the cable run to
exceed the NFPA 50-foot maximum
transition length and run long
lengths within your building.
• Performance stability can ensure
that the cable will continue to perform mechanically and electrically
even if the surrounding environment subjects the cable to potentially damaging forces.
• Ultraviolet resistance prevents the
sun’s rays from embrittling and/or
fading the cable’s outer jacket.
• A wide temperature range will al-
low the cable to weather tem-
perature extremes. Gel filling
keeps moisture out of the cable’s
core, maintaining its electrical
performance, ensuring consistent
impedance and insertion loss for
the life of the product. Gel-filled ca-
bles can be difficult to work with,
however, so ensure that the gel is
user-friendly and clean to install,
and requires minimal prep time.
• PoE compatibility is recommended
for outdoor cables with digital
buildings moving to the forefront.
OSP cables that support power and
data over a single cable, make installations easier and faster. PoE
cable in OSP applications can also
be used to reach outside cameras
without having to run electricity or
conduit to the camera, or requiring
a nearby electrical outlet. u
Ron Tellas is technology and applications manager for enterprise networks with Belden (www.