Alcatel-Lucent 7330 Product Information Manual page 70

2 — Part numbers, ordering, and deployment configuration overview
Splitters and unused ports
It is an industry best practice for fiber distribution networks to use APC-based
connections or spliced connections to avoid any potential network problems.
Alcatel-Lucent recommends that the unused ports of splitters should be terminated
on an APC-based connector.
2.5 ONT and customer premises environment
A large proportion of the physical layer connectivity problems are caused by poor
installation practices and connectivity issues at the drop or inside the customer
premises, because of internal wiring issues. Internal customer premises issues are
outside of the scope of the ONT user documentation.
Space
Planners should determine the space requirement based on the footprint of the ONT
and the UPS, and ensure that there is sufficient space at the installation site.
Alarms
Determine the alarm termination requirements. Find out the total number of alarms,
and the number and types of connections required.
Power and ground cable
Examine the power and ground requirements. Collect information about the
following:
•
number of connections
•
run lengths and required wire gauge
•
termination requirements, such as lugs
•
safety guidelines
Fiber drop
A significant proportion of deployment costs is linked to the drop installation and
service activation. A fiber drop involves the interconnection between the drop
terminal and building to be served. In a PON, the drops can serve a MDU, BONT, or
SFU.
Fiber drop cable termination is straightforward for outside installation at the
customer premises. Most of the labor involves running power from inside the
premises to the outside, and ensuring that the ONT is installed and grounded
correctly. A large number of customer service issues are caused by incorrect
installation, grounding, or cabling.
Fiber drops are more complicated for an MDU than BONTs and SFUs. MDUs may
require multiple fibers in the drop cable to serve multiple ONTs or splitters in the
building. Figure
2-16
2-3 shows MDU cabling considerations.
December 2010
ONT Product Information Guide Edition 01
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