Broadband Communities

OCT 2018

BROADBAND COMMUNITIES is the leading source of information on digital and broadband technologies for buildings and communities. Our editorial aims to accelerate the deployment of Fiber-To-The-Home and Fiber-To-The-Premises.

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MDU TECHNOLOGY 3 6 | B R O A D B A N D C O M M U N I T I E S | w w w. b r o a d b a n d c o m m u n i t i e s . c o m | O C T O B E R 2 0 1 8 Making a Building Fiber-Ready Following these guidelines will help building owners provide spaces, pathways and cables that service providers can use to deliver fiber optic services. By Mark Boxer and John George / OFS, Kristi Johnson / Corning, Larry Johnson / FiberStory T he case for fiber in the building is clear. Fiber is the most future-proof communications medium available. It attracts residents, and it's less expensive, easier to install and less intrusive than copper and coax cables. e question in many building owners' minds is, "How do I make my building fiber ready?" is article is a condensed version of the white paper of that name published by the Fiber Broadband Association (FBA). For more information, please reference the full paper at the FBA's website (https://toolkit. fiberbroadband.org/d/do/2639). WHAT IS FIBER TO THE UNIT? If at least one fiber passes or enters each living unit, a building has fiber to the unit. More than one fiber per unit may enable future services or multiple carriers to service the building. To accommodate future requirements, the FBA recommends that the number of fibers in the riser be 1.5 times the number of living units. e fiber type is critical. Single-mode fiber is recommended for in-building fiber networks, and because buildings contain many corners and bends, bend-insensitive, single-mode fibers are recommended. For risers, fibers meeting or exceeding International Telecommunication Union (ITU) Recommendation G.657.A2 are recommended. For drops down hallways and inside units, fibers meeting ITU Recommendation G.657.B3 are recommended. WHO DOES WHAT? Building owners have a choice regarding the scope of their involvement in network preparation. Compared with the construction of an entire building, fiber installation is a very small and inexpensive part. Typically, a building owner fulfills one of two roles: • Creating pathways for fiber • Building out the passive fiber network. If a building owner chooses to put in the network, close communication with the service provider is important to make sure the service provider will be able to use the network. For example, connector types must match, conduit sizes must be large enough, and power and cooling requirements for any active components must be met. COMPONENTS OF AN FTTU NETWORK A typical architecture of a fiber-to-the-unit MDU network is as follows: 1A/1B e telecom closet or fiber distribution hub (FDH) is the starting point in the network. Fibers in the building come back to this point. It may be placed indoors or outdoors. It may be dedicated to one or more buildings and may include optical splitters. 2 Riser cable, also known as distribution cable, serves as the network backbone. ere can be one or more cables, but the minimum total fiber count should be enough for each unit in the building. 3 A fiber distribution terminal (FDT) serves as a transition point between the riser and

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