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instead it offers numerous technical and
economic advantages over traditional
LAN, when space and distance challenges need to be addressed, and ability
to carry multiple services become a critical requirement.
POLANs are most suitable for large
premises and public venues (hospitality,
sport venues, campus, conference centers,
hospitals, military bases, etc.) with more
than 250 endpoints (drops). On the other
hand, it is wise to be aware of potential
challenges when reviewing a POLAN deployment for your next project.
and GPON are not interoperable, and
most active equipment vendors offer proprietary systems that will not be supported by other vendors. Your choice of a
POLAN partner is very critical to your future success.
Limited POLAN ecosystem—
POLAN is still in its infancy while traditional LAN is dominant in the market.
This means there are not many knowledgeable IT professionals in the POLAN
space, which could create a maintenance
challenge if the deployment has not been
planned and conducted properly.
Distributed ONT/ONU devices—
These end devices are distributed
throughout your network and may be accessible to end users. This could increase
the risk of having ONT/ONU equipment
manipulated or damaged.
Lack of dedicated POLAN
standards—FSAN, ITU-T, IEEE, and
DOCSIS provide system guidance; ANSI/
TIA-568 and BICSI TDMM 13 provide components and cabling guidance. Unlike traditional LAN, however, there is no dedicated standards body that covers this
particular indoor network architecture,
therefore POLAN deployment is usually
based on best practices rather than standard guidance.
These next-generation PON technol-
ogies are set to help us achieve higher
bandwidth, cost-effective speed upgrades,
flexible network topology and legacy sys-
tem compatibility by having the right net-
work backbone in place.
Proper planning can help create a robust blueprint that allows you to migrate
through several upgrade paths without
having to replace your structured cabling.
Although these technologies offer several
positive attributes, it’s important to be
aware of potential deployment challenges.
Vendor partners can help you navigate
this landscape, ensuring your net work
meets your needs long into the future. u
Qing Xu is technology and applications manager for optical fiber systems with Belden