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POINT-TO-POINT DEEP FIBER ACCESS
Dedicated broadband with Ericsson EDA 1200 Fiber Solutions
It’s no exaggeration to say that optical fiber has now begun to replace the copper loop as the preferred access
medium for fixed access networks. And this is a trend that
will continue for decades to come.
One option is to deploy active Ethernet all the way
to the end user. With point-to-point (P2P) fiber, each end
user gets a dedicated connection that will meet future
upgrade requirements and can provide unlimited and
symmetric bandwidth. Other key benefits are high scalability and service transparency, which means the ability
to provide any service irrespective of other users in the
network. P2P fiber also offers optimal security as each
line is dedicated to a single end user – a feature required
by many large businesses.
An attractive long-term business case
A fiber access plant is a valuable asset that should be
considered as a long-term investment. Some incumbent
operators have already built Fiber-To-The-Home (FTTH)
networks to support their IPTV offers. Even though FTTH
requires a considerable upfront investment, upgrades to
active FTTH systems have often proven to be the most
attractive business case – from a perspective on the
future. P2P fiber is especially cost-effective for greenfield
sites, where investment in new access infrastructure is
already required. Compared to copper and hybrid fibercoax networks, OPEX will be considerably lower as P2P
fiber enables fewer and more centralized sites with no
need for active equipment in street cabinets. This results
in fewer site visits needed to maintain a network.
Suitable for open networks
Today, P2P fiber is a mature technology that enables
dedicated symmetric broadband speeds of 100 Mbps
per end user moving towards 1 Gbps. P2P fiber is also
the simplest way to deploy an open access network
with active Ethernet technology and it provides optimal
flexibility in terms of future bandwidth upgrades and unbundling.
Our Full Service Broadband architecture supports
a P2P deep fiber access solution that is based on the
Ericsson EDA 1200 Fiber Solution. The EDA 1200 Fiber
Solution is suitable for volume roll-outs and is in operation in several access networks, including large incumbent networks. Our solution is ideal for stepwise service
provisioning and service bundling and provides symmetric bandwidth that can be configured in a range of distinct steps from 0.5 to 100 Mbps to each end user.
P2P fiber means a considerable number of fibers terminate in the Central Office. This is not a major issue,
as Ericsson’s solution includes micro cables with a high
fiber count of up to 96 fibers. In addition, optical distribution frames (ODFs) and fiber management systems
handle the fiber in an efficient and elegant manner.
Our P2P fiber solution is extremely viable for open
networks. Our goal is to assist both existing and new
alternative operators in deploying open fiber access networks that are operator-neutral and that allow numerous
service providers to compete in a network.
Complete deep fiber access offering
Ericsson offers a complete solution for the planning, deploying and operating of P2P based deep fiber access
networks. It includes passive fiber infrastructure, active
electronics (fiber access nodes, aggregation switches,
customer premises equipment), indoor and outdoor site
solutions and management systems. Also included are
various consultancy and customer project services, network design, integration and implementation, hosting
and managed services.
Installation at customer premises
The following chapters describe the typical elements in a
P2P deep fiber access solution from Ericsson. P2P fiber
deployment in a multi-dwelling unit (MDU) will be used
as an example.
Installation of fiber to the individual apartments within
the MDU can be done in two different ways.
The first option is fiber to the building (FTTB) where
a CAT5 fiber access node is placed centrally within the
MDU, using Category 5 Ethernet cables to connect to
each apartment.
The second option is fiber all the way to the end user
(FTTH/FTTP). In MDUs the fibers from end users (the drop
network) need to be concentrated to distribution cables
with higher fiber counts. This is done in a Fiber Access
Terminal (FAT), which is usually placed where the ducts
or cables change from indoor to outdoor, that is, in the
basement or ground floor of the building or at the curb.
For the drop network and distribution network, Ericsson
offers traditional fiber cables as well as our air-blown
fiber systems Ribbonet® and Micronet™.
The fiber or CAT5 is terminated in each apartment.
For FTTB, CAT5 terminates directly in the Customer
Premises Equipment (CPE). For FTTH, Ericsson offers
a multi-purpose fiber optic termination box that can be
completed with an optical/electrical media converter
transforming the passive outlet into an active fiber optic
user node. We also offer a number of residential gateways with support for different services.
FTTH / FTTP
FTTC
Fiber-To-The-Home /
Fiber-To-The-Premises
Fiber-To-The-Curb
Fiber Drop Cables
Fiber Terminal
Metro
Ethernet
Network
FTTB
Fiber-To-The-Building
Fiber Cables
Aggregation
Fiber Access
Node (EFN324) Switch (ECN430)
CAT5
Central Office
EFN324c
Access network termination
Metro Ethernet aggregation
The fiber access node serves as termination point of
end user lines on one side and entry point to the Metro
Ethernet network on the other.
In FTTH deployments, the fiber access node is placed
in the Central Office. In FTTB deployments, the fiber access node should be located centrally within the MDU,
such as on the ground floor or in the basement. The
reach of CAT5 is 100 meters, so one or more fiber access
nodes can easily serve 20-40 apartments.
Our P2P fiber access is based on the Ericsson EDA
1200 fiber access node EFN324. It’s a second generation Ethernet switch that uses the latest technology and
standards and provides 100 Mbps connections to each
end user. EFN324 has the stability and Quality of Service
expected from carrier class equipment. It provides
robust, reliable and secure access to IP services
including telephony, high-speed Internet, multicast
video streaming and TV distribution.
For aggregating the traffic in the access network towards
the Metro Ethernet network, our Ericsson EDA portfolio
includes an advanced aggregation switch and controller
node, the ECN430. ECN430 includes 20 optical/electrical
combo ports. If, as an example, the EFN324 fiber access
nodes are daisy-chained in pairs, each ECN430 will
aggregate and control up to 40 fiber access nodes
and 960 end users. For larger nodes, you can either
daisy-chain more fiber access nodes or use additional
aggregation switches. It is also possible to provide
1 Gbps for business services by connecting them
directly to a port on the ECN430.
Aggregation Switch and Controller Node ECN430
Fiber Access Node EFN324c for CAT5
EFN324 is more flexible and scalable than traditional
Ethernet switches and offers 24 downlinks and dual
Combo Gigabit Ethernet uplinks. It’s available in several
interface variants, including single-mode single fiber,
multi-mode dual fiber and electrical CAT5 Ethernet.
ECN430 is a 20-port Gigabit Ethernet routing switch that
combines the speed and low cost of a Layer 2 switch with
the ability to route at Layer 3. As an option, ECN430 can
be equipped with two 10 Gigabit Ethernet interfaces.
A unique feature is the embedded EMP functionality which allows ECN430 to take on a central and active
role in the management of the underlying access nodes
such as the EFN324. This has the benefit of having just
one management point for up to 10,000 end users. Ericsson’s EDA 1200 solution offers a flexible EMP topology
network that allows an operator to utilize the exact same
aggregation network for fiber-based and xDSL-based
traffic. For networks where the EMP functionality is not
needed, our Ethernet aggregator EMN120 is a costeffective alternative. EMN120 basically offers the same
features as ECN430 except the EMP functionality.
VDSL2 – an alternative for the last drop
VDSL2 is an alternative to fiber or electrical CAT5
end user termination with short distances. Ericsson’s
award-winning VDSL2 site solution is optimized for
cost-effective VDSL2 roll-out with an up to 30% CAPEX
reduction on outdoor cabinets.
Management system
Installation with ECN430 (top) and EFN324s
Ericsson’s EDA 1200 portfolio includes ServiceOn PEM,
a dedicated element manager. Designed to assist operators with network management processes, ServiceOn
PEM secures operation and maintenance of the EDA
1200 Fiber Solutions and includes full element management via an open Northbound Interface as well as via an
extensive graphical user interface.
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Broadband Internet communications through
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www.ericsson.com
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© Ericsson AB, 2008