ftth hsbb training

PLANNING OF FTTH NETWORKIN TM

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OverviewFTTH Network Structure

Legend:OLT: Optical Line TerminalODF: Optical Distribution FrameFDC: Fiber Distribution CabinetFTB: Fiber Termination BoxFWS: Fiber Wall SocketONU: Optical Network Unit

Optical Line Terminal (OLT)

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• 1 OLT can support 1,024 homepassed• 4 PON cards• Each PON card has 4 PON ports• Each PON port can serve 64 customers

Power supply card

TDM card

Fans card

10GE/NX1GE interface

Control Switch Card

PON card #1 with 4 port

PON card #2 with 4 port

PON card#4 with 4 port

Alarm module

4

FTTH ELEMENTS

• Sample of OLT:

Patch cord (connectorised) daripada OLT masuk ke IN splitter. (laluan kiri menghadap gambar)

Patch cord (connectorised) daripada OUT splitter ke fiber tray di bawah (laluan kanan)

OLT : 1 shelf : 4 kad servis (1 kad : 4 PON Port)

E1 Module untuk DDN

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Power Distribution Panel

Shelf OLT

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• Sample of ODF:

Kabel E-Side masuk ke ODF – Maksima 5 kabel

Splitter Tray

Fiber Splicing Tray

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FTTH & METRO-E NODEINTERCONNECTION

Planning Method:

a) 1st connection: install 1 GE uplink, upgradable up to 4 GE uplink – to maximize uplink utilization.

b) Further upgrading (more than 4 GE) – install 10 GE uplink.

E-side fiber

PON port

1 GE

1 GE

E-side fiber

PON port

1 GE

1 GE

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Uplink to Metro-E No. of customer connected Remarks

1 GE 116 For initial deployment

2 GE 323 For initial deployment with redundancy and 2x1GE with working simultaneously

3 GE 529 Required upgrading when customer connected reach 529.

4 GE 736 Required upgrading when customer connected reach 736.

10 GE 1,977 Required upgrading when customer connected reach 1977.

20 GE 4,044 2x10GE working simultaneously.

Assumption to this table:• Bandwidth per port is 37MB• Broadcast IPTV = 55 channels for 2011 • IPTV channel = 8Mbps (MPEG-4)• Voice 256k is based on 3 party called

Guidance for AND to choose uplink interconnection

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THE PRINCIPLE OF PON PLANNING

A) E-side (OLT- FDC)1- point-to-point topology

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2- Ring topology

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COFDC #N

6km

6km

FDC #1Core #1 East

Core #1Protection

2:8 splitter

Pre-termination of 2 different cores

1:8 splitter

DP

Diagram: typical ring topology to single dwelling unit (SDU) areas, with cascade splitting at FDC and DP.

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Ring E-side Fiber

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1 card = 4 PON ports

OLT and ODF

Joint J03 Joint J01

Joint J02

FDC C001

DE

FDC C002

DE

F002Protect

F001Main

FS001 (spur)

DP C001_001optical splitter

C001_F001

FDC C003

DEFS002(spur)

DP

DP

• Detail ring E-side fiber

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Splitter

SC/UPC Connector

Pig Tail

Drop cable

• Generic termination of splitter:

OPTICAL SPLITTER

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Fiber Distribution Cabinet (FDC)Schematic Diagram

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Fiber Distribution Cabinet (FDC)

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B) D-side(FDC – DP)

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Outdoor Fiber DP:

Isi kandung Fiber DP jenis Terminating

Output Splitter : Sambung Drop Fiber ke rumah

Splice Tray dan Input Splitter : Kabel D-Side di’terminate’ ke splitter

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C) Subscriber access segment (DP-FTB)• DP : interface between homepassed and home entry• Mechanical splice inside FTB• From FTB, internal fiber will be terminated at FWS• OWS will be connected to ONU via patch cord

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THE DP TERMINATION

• DP mounted on existing pole (together with copper DP) ideally in middle of servicearea to minimize length of aerial drop cable.

• For branching closure in manhole, fibers are laid on pole and branched from DP to FTB.

• ND is only responsible for installation task from FDC up to DP.• When customer subscribes, it is O&M to install all elements from DP to OWS (inclusive

outdoor & indoor drop cables & FTBs.

FA Connector plug

FTB

FA Connector socket

FA Connector socket

Indoor Cable

Fibre Wall Socket

ONU

SC Connector

Drop Cable

Cable BearerFibre DP D-side cable

FA Connector plug

FTB

FA Connector socket

FA Connector socket

Indoor Cable

Fibre Wall Socket

ONU

SC Connector

Drop Cable

Cable BearerFibre DP D-side cable

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SPLITTER DESIGNS4 RULES:

i) Rule No. 1, 1:N at SDF where N = 64 or 32ii) Rule No. 2, 1:N (FDC) & 1:N (DP) where N = 2,4,8 or 16iii) Rule No. 3, 1:4 (CO) & 1:N (DP) where N=8 or 16iv) Rule No. 4, 1:4 (DP) & 1:N (DP) where N=8 or 16

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a) Rule No. 1, 1:N at SDF where N = 64 or 32

E-side Cable

Central Office

OLT

Fiber Splice

Closure Splitter 1:64 in SDF room

For 1:64 at SDF, the maximum fiber distance is 8 km.For 1:32 at SDF, the maximum fiber distance is 16 km.

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b) Rule No. 2, 1:N (FDC) & 1:N (DP) where N = 2,4,8 or 16

Sub#01 FDC

OLT

DP 01of splitter 01

01

01

02

01

02

01

08

DP 08 of splitter 01


Sub#08

Sub#57

Sub#64

Layer 2 Splitter

Sub#65

Central Office

Layer 1 Splitter

E-side D-side Sub#01 FDC

OLT

DP 01of splitter 01

01

01

02

01

02

01

08



Sub#08

Sub#57

Sub#64

Layer 2 Splitter

Sub#65

Central Office

Layer 1 Splitter

E-side D-side

For 1:8 (FDC) & 1:8 (DP), the maximum fiber distance is 8 km.For 1:4 (FDC) & 1:8 (DP), the maximum fiber distance is 14 km.For 1:8 (FDC) & 1:4 (DP), the maximum fiber distance is 14 km.For 1:4 (FDC) & 1:16 (DP), the maximum fiber distance is 7 km.

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c) Rule No. 3, 1:4 (CO) & 1:N (DP) where N=8 or 16

Central Office

OLT

1:4

1:16

DP

Fiber Splice ClosureFeeder Cable

Distribution Fiber

pole

Drop Fiber

For 1:4 (CO) & 1:16 (DP), the maximum fiber distance is 7 km.For 1:4 (CO) & 1:8 (DP), the maximum fiber distance is 14 km.

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d) Rule No. 4, 1:4 (DP) & 1:N (DP) where N=8 or 16

Central Office

OLT

E-side Cable

Fiber Splice Closure

pole

Fiber Splice Closure

Distribution Fiber

pole

1:4 1:16 1:16

Drop fiber Drop fiberDP Box

DP

For 1:4 (DP) & 1:16 (DP), the maximum fiber distance is 8 km.For 1:4 (DP) & 1:8 (DP), the maximum fiber distance is 14 km.

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Recommendation• For MDU in Greenfield area, one single layer splitter to be used, i.e 1:64. AND to calculate loss between CO and SDF.• For MDU in Brownfield area, MSAN with VDSL2 to be used.• The areas with low broadband population, the recommended design are FDC with cascaded splitter (since each DP with 8 terminations). • The areas with high broadband population and nearer to the Central Office , the CO with Cascaded Splitter is recommended.• The areas with high broadband population and far from Central Office the DP with Centralise and Cascade Splitter 1:4 (DP) and 1:16 (DP) is also recommended.

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FTTH LINK ATTENUATION• General calculation:

P =L×Ar + ΣAS + ΣAC + ΣFA

Where:

L×Ar: fiber attenuation (L: relay side length, Ar fiber attenuation:,

G.652D cable is used in this project.

1310 nm window single-mode fiber loss is 0.35dB/Km, 1550 nm window single-mode optical fiber loss is 0.21dB/Km,

ΣAS: fixed side optical cable connector attenuation (splicing)

ΣAC: active connector attenuation between S and R

ΣFA: Field Assembly connector attenuation between OLT and ONU

P: attenuation value between OLT and ONU

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• Table of list of optical power attenuation:

• The maximum dB loss for GPON from OLT to ONU is 28dB.• Generally, the allowable dB loss from OLT to DP is 25dB.

No. Network Element Optical power attenuation

1 1:2 splitter < 3.6 dB

2 2:2 splitter ≤ 3.5 dB



5 2:8 splitter ≤10.4 dB


7 2:16 splitter ≤13.7 dB


9 2:32 splitter ≤17 dB

10 1:64 splitter ≤21 dB

11 1 km fiber (1310 nm) ≤0.35 dB

12 1 km fiber (1550 nm) ≤0.21 dB

13 Fusion Splicing point ≤0.05 dB

14 Connector ≤0.2 dB

15 Field Assembly Connector ≤0.7 dB

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FDC with Cascade Splitter, 1:8 (FDC) & 1:8 (DP)

From OLT to DP: 24.85 dBFrom DP to ONU: 2.1 dB

No. Location Item TypeUnit dB loss

Qty Attenuation

1 OLT Connector SC 0.2 1 0.22 ODF Connector SC 0.2 1 0.2

Splice Fusion 0.05 1 0.055 Closure Splice Fusion 0.05 3 0.156 E-side Cable 6 km 0.35 6 2.17 FDC Splice Fusion 0.05 1 0.05

1:8 splitter 10.5 1 10.5Connector SC 0.2 1 0.2Splice Fusion 0.05 1 0.05

8 Closure 2 splice 0.05 2 0.19 D/ cable 2 KM 0.35 2 0.7

10 Fiber DP Splice Fusion 0.05 1 0.051:8 splitter 10.5 1 10.5

11 Drop Fibre FA FA-SC 0.7 1 0.712 FTB FA FA-SC 0.7 1 0.713 FWS FA FA-SC 0.7 1 0.7

26.95Total Attenuation

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OLT ODF

1:8

Splitter

1:8

SplitterFTB FWS

Splitter 1:8 (FDC) & 1:8 (DP)

FDC DPCO Premise

Connector < 0.2 dBField Assembly (FA) < 0.7 dBSplice < 0.1 dB

Legend:

E/S6 KM

D/S2 KM

OLT ODF

1:8

Splitter

1:8

SplitterFTB FWS

Splitter 1:8 (FDC) & 1:8 (DP)

FDC DPCO Premise

Connector < 0.2 dBField Assembly (FA) < 0.7 dBSplice < 0.1 dB

Legend:

E/S6 KM

D/S2 KM

Diagram

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• From E-side cable to DP:

• At CO:

FDC with Cascade Splitter, 1:8 (FDC) & 1:8 (DP)

NAMING CONVENSION

MEN Port Tx/RxNo. Type Rack Port Chasis SLOT PORT No. Type Rack Port

Code EPExxyyy01 xx/yy/zz Tx/Rx xxx ODFxxx yyy Gxx yy zz xxx xxx yyyE.g EPEHWPGD01 05/01/10 Tx 900 ODF001 060 G01 01 04 900 ODF001 060Range EPE[supplier][Exc]01-99 Tx/Rx 300/600/900 ODF001-999 001-999 G01-99 01-99 01-99 300/600/900 ODF001-999 001-999

ItemODFOLTODF

Cable Code

Core No. Joint Cable Code

Core No.

Splitter Type

Splitter No.

Output Port No. Cable Code

Core No.

Splitter Type

Splitter No.

Output Port No.

Code Fxxx yyy Jxxxx Fsxxx yyy Cddd xxx SP1_2:Nyy xxx FDxxx yyy xxx SP2_1:N yy xxxE.g F001 003 J0001 Fs002 005 C001 000 SP1_2:8 01 004 FD001 003 0001 SP2_1:8 01 3Range F001-F999 001-999J0001-J9999Fs001-Fs999 001-999 C001-998 000 01-99 001-999 FD001-FD999 001-9990001-9999 01-99 001-999

E-side fiber #2 First Layer Splitter

ItemCabinet

No.

E-side fiber #1 Second layer splitterD-side Fiber

DP No.

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FIBER OPTIC MONITORINGSYSTEM (FOMS)

Overview

• End-to-end Fiber Optic link fault and performance monitoring across Access e.g FTTH and Core Network – for preventive maintenance & fast fault restoration.

• Advantage:- With FOMS, real time monitoring can be performed where instant

observable change in network condition can be monitored.- Decrease network & service downtime- Accelerate restoration- Improve duration of fiber cable repair.

• Able to detect abnormalities e.g Loss Increase, Total Loss, Broken Cable etc.• Fiber fault location can be pinpointed – eliminate tedious task to locate fiber fault.• Auto detect & update fiber optic link status & inventory changes

G01

S01

01

02

ODF #1Type 300

0102

F003

F004

001

001

FS002 001

002

J0001

C002SP1_2:8

01

02

1

8

1

9 10 16

23

8

1 2 8

08

SP1_2:8M

0100101

08

16

24

008016

024

FD002 SP2_1:8RDP #0001

01

SP2_1:8SDP #0008

01

SP2_1:8RDP #0016

At COE-side

D-side

56

35

1.31µm

OLTOLT 1.49µm

OTDR

Fiber Selector

Coupler Module1.65µm

OTDR

Fiber Selector

Coupler Module1.65µm

PON

NMS

PON

NMS

FOMS

Central

System

FOMS

Central

System

RTU

NISNIS

1x8splitter

FBG Filter

1

FDC

81x8 splitter

Network diagram for FOMS in FTTH network

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NETWORK DESIGN FOR FOMS

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PON Responsibility MatrixFTTH project Responsibility Matrix ( ODN part )

Item Task Description

Owner

JKH Contractor

PON vendor

TM

1.00 Exchange Splicing cabinet

1.01 ODF Splicing cabinet installation 　 X 　

1.02Laying down the Main fiber

cable till the Splicing cabinet X　　

1.03Fiber splicing in the splicing

cabinetX 　　

1.04 Connecting & test X 　 X1.05 Approval of the fiber test 　 X X2.00 E-side (from Exchange to FDC)2.01 Ducting system X 　　2.02 Laying down the optical cable X 　　2.03

Supply and installation of the OCCB (FDC)

X X　　2.04 Splicing in the OCCB (in/out) X 　　2.05 FDC location Permission X 　 X2.06 CW for FDC X 　　2.07 FDC installation X X 　2.08

Patch cord connections inside the FDC 　 X 　

2.09 Fiber splicing in the FDC (in/out) X 　　2.10 Connecting & test X 　 X2.11 Approval of the fiber test 　 X X3.00 D-side (from FDC to DP)3.01 Ducting system X 　　3.02 Laying down the optical cable X 　　3.03

Division Box (DP) location Permission

X 　 X

3.04 Division box installation X　 X 　3.05 Connecting & test X 　 X3.06 Approval of the fiber test 　 X X

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THANK YOU

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