of an FTTx network is the logical or theoretical view of the network, as well
as how the components (i.e., cable, hardware and splitters) relate to each
other. The topology is the physical layout view of the network. It is where
components are located and how they are connected. It is also how the
architecture is implemented on the map. The topology may look the same as the architecture,
or look very different, even though it provides the logical function dictated
by the architecture.
providers deploying FTTx networks with point-to-multipoint passive optical
networks (PON) topologies have a fundamental architectural choice to make
regarding splitter placement in the network. This involves using centralized
(single-stage) or cascaded (multi-stage) splitter configurations in the
distribution portion of the network. According to the desired outcome of the
business plan, both are deployed for various reasons and come with their own
set of advantages and disadvantages.
CLICK TO TWEET: CommScope's James Donovan wants you to be the architect of your FTTx network’s future.
The architecture drives costs in
FTTx networks, so it is important to understand the different approaches. The
following types of FTTx access
are all point-to-multipoint. The optical splitter used in PON-based
point-to-multipoint networks can be placed at different locations in the
network such as:
split (cascaded) architecture
- Fiber indexing
As today’s network technologies
advance, operators can choose among different strategies and approaches for
bringing fiber deeper into their network. As operators must be able to respond
to fast-changing demands and service requirements, network flexibility is
increasingly critical. Given the ever-growing demand to both increase fiber
capacity and reduce future civil works costs, more fiber is deployed in the
network than currently required to accommodate future needs. The amount of
excess (dark) fiber and its location in the network depends on local regulations
and competition. However, besides reducing civil works costs, this approach
provides faster connectivity at times and is important to winning new
customers. With today’s reliance on ubiquitous connectivity, ultra-high network
reliability is no longer a nice-to-have, but it is designed from the ground up.
That’s why it is important that you
learn all aspects of an FTTx architecture from the CommScope Infrastructure Academy. In its free FTTx
Architectures (WR9423) course, students will understand the system
architecture used for FTTx networks, centralized and distributed split
solutions and the infrastructure options involved.
If you are
involved in the design or installation of FTTx solutions and wish to improve
your knowledge and working practices, then this course is for you.