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E1 E1-E2 (CFA) E2 (CFA) FIBER TO THE HOME FIBER TO THE HOME © BHARAT SANCHAR NIGAM LIMITED FIBER TO THE HOME FIBER TO THE HOME (FTTH) (FTTH)

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Microsoft PowerPoint - Ch16 E1-E2 CFA FTTH.ppt [Compatibility Mode]© BHARAT SANCHAR NIGAM LIMITED
(FTTH)(FTTH)
Video
Dependable
Voice
Service
These services are delivered by
Digital Subscriber Lines (DSL)
Voice
• Commercially viable for network owner/operator
• Efficiency = lower costs for users and service providers
• Enhanced choice is attractive to customers
To meet the costumers demand, service provider needs
a Robust networking solution.
technologies or FTTH
interactive, video-based services.
In FITL network architecture the fiber optic technology is
being deployed from Central Office (CO) of a telephone
carrier to a remote serving area interface(SAI) to an Optical
Network Unit (ONU) located at the customer premises.
© BHARAT SANCHAR NIGAM LIMITED
Network Unit (ONU) located at the customer premises.
Normally, the fiber is deployed in either all or part of the
local loop distribution network.
FTTP.
It is a generic term for any network
architecture that uses optical fiber to replace
all or part of the usual copper local loop used
form telecommunications.
Fiber To The Node/Network (FTTN)
Fiber To The Curb or Cabinet (FTTC)
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Fiber To The Buildings (FTTB),
Fiber To The Home (FTTH),
For simplicity, most people have begun to
refer to the fiber network as FTTx, in which
x stands for the termination point.
FTTNFTTN
Fiber- optic cables runs to a nearest serving cabinet
(neighbourhood).
© BHARAT SANCHAR NIGAM LIMITED
pair wiring.
1500 meters in radius.
If the cabinet serve an area of less than 300
meters in radius then the architecture is normally
called fiber to the curb.
Advantages :-
supports convergence.
Allows the use of a variety of media from the
Telephone Exchange to the
FTTC (Fiber To The Curb) FTTC (Fiber To The Curb)
O
L
T
E
the curb near the user’s home.
FTTB (Fiber To The BuildingFTTB (Fiber To The Building)
O
L
T
point to the home living space or business office space
FTTB can be converted to full FTTH.
FTTH (Fiber To The Home) FTTH (Fiber To The Home)
O
L
T
E
networks using optical fiber cable.
FTTC, the next step, ensures that fiber is
available very close to the customer/building.
FTTN ensure that all the Network Elements
shall have fiber medium.
© BHARAT SANCHAR NIGAM LIMITED
shall have fiber medium.
to all buildings.
in this plan.
It is a form of fiber-optic communication delivery in
which an optical fiber runs directly onto the
customers' premises.
communication networks such as (FTTN), (FTTC)
© BHARAT SANCHAR NIGAM LIMITED
or hybrid fiber coaxial (HFC), all of which depends
upon copper wires or coaxial cable for "last mile"
delivery.
Fiber to the premises can be further categorized according to the
optical fiber ends.
FTTH (Fiber to the Home):- It is the form of fiber optic
communication network in which optical signal reaches upto
the end user’s office.
© BHARAT SANCHAR NIGAM LIMITED
the end user’s office.
2- FTTB (Fiber to the Building):- It is the form of fiber optic
communication delivery in which optical signal reaches upto
the building, but where the fiber terminate before reaching the
home, business premises or set of customers. The remaining
path uses other than Optical Fiber.
Optical Portion:-Optical Distribution Network have
several technologies to deploy.
exactly one customer .i.e. point to point topology
Provides excellent bandwidth because each
DIRECT FIBERDIRECT FIBER
customer have their own dedicated fiber.
Costlier due to the large amount of fiber
requirement.
central office is actually shared by many customers.
There are two leading optical distribution networks with
SHARED FIBERSHARED FIBER
which we can achieve this split.
Active optical network (AONs)
Passive optical network (PONs)
multiplexer.
Active optical networkActive optical network
© BHARAT SANCHAR NIGAM LIMITED
directed only to the particular customer.
Active Ethernet uses optical switches to
distribute the signal.
and routing.
PON is a point -to-multi point, fiber to the premises
network architecture.
a single optical fiber to serve multiple customers.
Passive Optical NetworksPassive Optical Networks
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A PON configuration with 1:32 splitters reduces
the amount of fiber.
protocol towards Central Office.
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in Central Office as head end.
OLT transmits optical signal to splitter, from
Functioning of PON ArchitectureFunctioning of PON Architecture
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where the signal is distributed to multiple customers directly
or via another splitters.
Optical Network Terminals (ONT)
Maximum distance is 20 km in between OLT and
ONT for 1:32 splitter.
PONs do not require any power for the splitters so
© BHARAT SANCHAR NIGAM LIMITED
PONs do not require any power for the splitters so
operational cost and complexity is reduced.
Passive optical splitters are used to
split the fiber/ bandwidth and share among many
customers.
Telechoice
reach supported by protocol)
2G
BTS
TDM
The basic elements in any PON system The basic elements in any PON system
are:
PON with the various network interfaces
ONU/ONT : An External Plant / Customer Premises
equipment providing user interface for many/single
© BHARAT SANCHAR NIGAM LIMITED
customer
splitters/combiners providing connectivity between
from OLT
Phase-I (2008-09): In phase-I overlay access network is
planned in 98 cities where the number of Direct Exchange
Lines are more than 3 lakhs i.e 30 millions, therefore Ethernet
in the first mile using the FTTB, FTTH is proposed to be
deployed.
FTTH systems are deployed as either point to point optical
system or point to multi point fiber system (PON).
7 lakhs customers are targeting in the first year.
1.5 lakhs customers in 73 cities with GE-PON.
5.5 lakhs customers in 25 cities with GE-PON &
G-PON.
other cities having Optical Access Network cables
laid as per OAN target.
© BHARAT SANCHAR NIGAM LIMITED
In second phase FTTH plan will target 7 lakhs
customers to be extended with fast Ethernet/ Gigabit
Ethernet service to their buildings on Fiber.
Phase-III (2010-11): In third phase OAN project is
proposed to be commenced in 198 cities.
Sufficient fiber structure shall be laid in all these cities for
commencing FTTH service.
The total target of FTTH deployment in third phase will
be approximately 7.5 lakhs.
20 lakhs (200 million).
Broadband PON
(GEPON)
The GEPON network do not support the redundancy so only
single fiber and single input splitters are planned.
There are 20 PON ports per GEPON chassis
and each chassis is capable to cater 32X20=640 customers.
© BHARAT SANCHAR NIGAM LIMITED
and each chassis is capable to cater 32X20=640 customers.
There are only 1:2, 1:4, 1:8. 1:16 and 1:32 splitters.
1:32 split architecture shall be used in the highly
dense locations and multistoried buildings.
PLANNING PLANNING GUIDELINESGUIDELINES
GPON
The OAN to be planned in all broadband cities by
deploying high count Optical Fiber cables.
© BHARAT SANCHAR NIGAM LIMITED
The minimum fiber count to be deployed in these cities
will be 96Fibers or 288Fibers and above in main routes and
24Fiber/12Fiber cables for the buildings. The leading fiber
will be terminated in fiber termination box.
2:32 split architecture
It is desirable to have one splitter at the premises of the
customer / building / locality.
The two leading fiber from (24/12Fiber cable) cables,
fiber 1 & 2 will be input to the 2:32 splitter. These 2 fiber
© BHARAT SANCHAR NIGAM LIMITED
fiber 1 & 2 will be input to the 2:32 splitter. These 2 fiber
can be joined in the two sides of OAN. The other side of the
main route fiber will form a ring and terminated on other
port.
Cascade split architecture in GPON
As the number of customers will be less in the beginning
and distributed across the city, cascade splitters can be
deployed to cover more area.
The number of proposed split can be only two.
Splitters may be used in any of the following combinations
© BHARAT SANCHAR NIGAM LIMITED
Splitters may be used in any of the following combinations
such as:
2:4 & 1:16
Advantage of FTTH through PONAdvantage of FTTH through PON
Being passive network, no active components are required from Central office to end user. Single fiber to the end user providing revenue
generating services.
power consumption. Reliable, scalable & secure. Future proof network architecture.
Application AreasApplication Areas
Residential or Business Services High Speed Internet Transparent LAN Service Broadcast Video Multi-Play (Voice, Video, Data etc.)
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Multi-Play (Voice, Video, Data etc.) Private Line TDM Telephony IP Telephony (VoIP) Wireless Services Wireless backhaul over PON
© BHARAT SANCHAR NIGAM LIMITED