DWDM Railtel Training Nov

2009 Wipro Ltd - Confidential1 2009 Wipro Ltd - Confidential1

Presented by:

Rahul Sethi

[email protected]

Wipro Infotech

DWDM BASIC HARDWARE DWDM BASIC HARDWARE

TRAININGTRAINING

2727--NovNov--2009 & 302009 & 30--NovNov--20092009

Venue: Railtel Corporation of India Ltd.Venue: Railtel Corporation of India Ltd.

MumbaiMumbai


Overview of WDM Technology. Basic Structure of DWDM. ADVA FSP3000. ADVA DWDM Cards. ADVA eROADM. Types of Railtel DWDM Sites. Ways to Access Network. Fibers in Brief. DWDM Alarms Overview. Loop Testing. Railtel DWDM Network. Western Region Live Traffic Details.

CONTENTSCONTENTS


Overview of WDMOverview of WDM

With the development of telecommunication, the requirements of the transmission capacity and service categories are becoming higher & higher.

Under this background, WDM technology emerged. WDM technology uses a single pair of fiber to transmit and receive multiple wavelengths and hence increases transmission capacity and bandwidth and reduces cost of laying down additional fibers.


What is WDM??What is WDM??

Wavelength Division Multiplexing (WDM) technology uses multiple wavelengths of light to transmit information over a single fiber optic cable. Each wavelength is a channel.

WDM assigns incoming optical signals into specific wavelengths of light (or lambdas).

This multiplexing allows to broadcast on different wavelengths without interfering with each other.

WDM carries each input signal independently of the others. This means that each channel has its own dedicated bandwidth; all signals arrive at the same time .


WDM LINKWDM LINK

In fiber-optic communications, wavelength-division multiplexing (WDM) is a technology which multiplexes multiple optical carrier signals on a single optical fiber by using different wavelengths (Lambdas) of laser light to carry different signals.


Difference Between WDM, CWDM & DWDMDifference Between WDM, CWDM & DWDM

WDM is the most cost effective solution to fiber congestion allowing for 2 to 1 or 3 to 1 fiber gains combining 1310nm, 1550nm & 1490nm wavelengths on a single fiber.

CWDM allows for a cost effective solution for short fiber spans. With the 20nm spacing, CWDM can be implemented inexpensively gaining up to 18 to 1 capacity on an existing fiber.

Where high capacity or long span lengths are required, the DWDM solution is the preferred method for gaining fiber capacity. With its high-tolerance lasers optimized in the 1550nm window (for lower loss), the DWDM systems are an ideal solution for more demandingnetworks.


WDM CLASSIFICATIONWDM CLASSIFICATION

WDM Classification is based on the Channel spacing between 2 Wave lengths

Channel spacing > 200GHz is called WDM

Channel spacing > 100 GHz is called CWDM

Channel spacing < 100GHz is called DWDM

Channel spacing < 25GHz is called UDWDM

100 GHz is equal to 0.8 nm


Advantages of WDM,CWDM & DWDMAdvantages of WDM,CWDM & DWDM

Two-channel WDM (and three channel) can be used to quickly and simply add an additional (or two additional) wavelengths. It is very simple to install and turn up and very inexpensive.

CWDM can simply and quickly add up to 18 additional wavelengths on ITU standard frequencies. It is ideal for moderately growing cross-sections of lengths up to 100km. Since the wavelengths are spaced 20nm apart less expensive lasers can be used resulting in a very low-cost, moderate capacity solution.

DWDM offers a very high-capacity, long haul solution for higher-growth cross-sections that may need to span greater distances. A DWDM system can be placed for a relatively low initial first cost and channels (wavelengths) easily added as growth occurs. EDFA Amplification in conjunction with dispersion management can extend the reach of the system up to 1000 of kms.

Why DWDM?


Resilient Features of DWDMResilient Features of DWDM

Amplification of all the wavelengths at once without first converting them to electrical signals.

The ability to carry signals of different speeds and types simultaneously and transparently over the fiber (protocol and bit rate independence).

We can combine up to 160 wavelengths and transmitting them simultaneously onto a single fiber to be separated at the far end.

DWDM uses wavelength spacing very fine and requires the use of lasers with very tight tolerance and stability. (which is approx. >100Ghz in WDM)

The DWDM wavelength band is from roughly 1530nm to 1565nm. This is the band in which the erbium doped fiber amplifier (EDFA) comes under picture.


Why DWDM??Why DWDM??

DWDM increases the capacity of embedded fiber by first assigningincoming Optical signals to specific frequencies within a designated frequency band and then multiplexing the resulting signals out onto one fiber.

The ability to provide potentially unlimited transmission, Capacity is the most obvious advantage of DWDM technology. The current investment in fiber plant can not only be preserved, but optimized by a factor of at least 40. As demands change, more capacity can be added, either by simple equipment upgrades or by increasing the number of lambdas on the fiber, without expensive upgrades. Capacity can be obtained for the cost of the equipment, and existing fiber plant investment is retained.

Why DWDM?


Basic Structure of DWDMBasic Structure of DWDM

The figure illustrates the functionality of a multichannel DWDM transmission system when various 10 Gbps signals are fed to optical transmission modules.


The optical output signals are converted to defined wavelengths in the 1550 nm window via wavelength transponders.

An optical DWDM coupler (multiplexer) then bunches these optical signals together on one fiber and forwards them as a multiplexed signal to an optical fiber amplifier (OFA).

Generally w.r.t. technology every 50 km we require an ILA and after every 300 km, we require an OADM site. Also it depends on the customer traffic requirement.

Basic Structure of DWDM (contd.)Basic Structure of DWDM (contd.)


Fiber Service Platform 3000R7Fiber Service Platform 3000R7(FSP 3000R7)(FSP 3000R7)


FSP3000FSP3000-- SHELFSHELF

19 version .(only single version). 20 Slots, all feasible (any card in any slot). 2 Power supplies (1 active and 1 stand-

by). Supports AC and DC both. 2 half slots (a NCU and b SCU). Fan Unit on Top. Shelf alarm status LED. LCD Display - Shelf Number.

- Fan Speed.- FCU Lamp Test.

Air Filter Unit in the lower part of the shelf.


Shelf ID ConfigurationShelf ID Configuration Each shelf belonging to same node requires a unique shelf ID from

1 to 20. This is configured on Fan Control Unit (FCU). Press Up or Down button until the required number is shown in the

Display. Shelf with NCU module must have shelf ID 1 (master shelf). Follow the pattern and assign consecutive numbers to other

shelves.


DWDM Modules/ Cards IN RAILTEL DWDM Modules/ Cards IN RAILTEL NETWORKNETWORK

Railtel DWDM System comprises of the following modules/ cards:

PSU: Power Supply Unit. NCU: Network Control Unit. SCU: Shelf Control Unit. 2OSCM: 2 Port Optical Supervisory

Channel Module. OSFM: Optical Supervisory Filter

Module. EDFA: Erbium Doped Fiber Amplifier. DCG: Dispersion Compensation Module. 4TCC: 4 Port STM-16 Transponder. 10TCC: 10 Port 1G Transponder. 2TCA: 2 Port 1G Transponder.


DWDM CARDS & PLUGGABLESDWDM CARDS & PLUGGABLES MANAGEMENT CARDS.

AMPLIFIER CARDS.

TRANSPONDER CARDS.

PROTECTION CARDS.

PASSIVE CARDS.

SFPs.


CHANNEL CARD TERMINOLOGYCHANNEL CARD TERMINOLOGY4TCC-PC2G7+10G -V #Dxx.

DWDM Channels 1-40

Very Long Reach

Pluggable Client PortMax Client RateAggregate Line Rate.

Core Type Segment TDM Module Type4 no. of Client Ports


WCA-PCN-2G5U

Pluggable Client & Network Port

Universal Clock Setting

Client Rate

WDM Module type

Access market Segment


SFP/2G5U/D1529.55V/SM/LC #Dxx

Type SFP & XFP

Wavelength DWDM 1529.55

Application 2G5,STM16,10G etc.

Distance - Very Long reach.

Fiber Type SM Or MMConnector Type

LC,FC,E2000 etc.

DWDM Channel 1


SFP : Small Form-factor Pluggable ADVA uses SFP s & XFP s(10 G &

11 G pluggable).

These pluggables contain complete optical transmit and receive unit.

SFPs used in the Railtel Network are 1310i and 850i.


MANAGEMENT CARDSMANAGEMENT CARDS Network Control Unit NCU.

Shelf Control unit SCU.

2OSCM card.

OSCM card.


NNetwork etwork CControl ontrol UUnitnit

PC with Linux OS and some specific ADVA software.

2 RJ45 ports for LAN access.

* C1 assigned an IP as per DCNplan to access nodesremotely.

* C2 is used for local accessingby Internet Explorer.

2 mini USB connector for local login via hyper terminal.

126 MB RAM.

1 GB Flash.

Located in upper half slot of 1a &


SShelf helf CControl ontrol UUnitnit Uplink (U) and Downlink (D)

interface, for inter shelf communication. (850 nm sfp is used).

Located in bottom half slot of 1b & communicate with SCU via backplane Ethernet Bus via Ethernet bus on the backplane.

Manage the cards of the local shelf.

Every site has only one NCU. SCUs would be same as the number of shelves.


2OSCM Card2OSCM Card 2OSCM - stands for 2 Port Optical

Supervisory Channel Module.

Wavelength on optical port is 1630nm.

Designed for Ring or Linear add/drop application.

2 Optical Ethernet Ports (NW and NE). NW stands for Network West, NE stands For Network East.

3 Electrical Fast Ethernet Ports. With this interface, we can login other nodes remotely.

Alarm and power LED indications.


OSCM CardOSCM Card OSCM - stands for Optical

Supervisory Channel Module.

Wavelength on optical port is 1630nm.

Designed for Ring or Point to point or Linear add/drop application.

1 Optical Ethernet Port.

3 Electrical Fast Ethernet Ports.

Other features similar to 2OSCM.


PASSIVE MODULES : GENERAL PASSIVE MODULES : GENERAL FEATURESFEATURES

No electric component involved in traffic payloads.

Power is required for management only.

Ports are divided into Network (N), Client (C), and Upgrade (U) ports.

Client port faces to the customer.

Network port faces to the DWDM line.

Upgrade port is to pass through wavelength not terminated on client port.


PASSIVE MODULESPASSIVE MODULES

OSFM- Stands for Optical Splitter Fiber Module.

CSM- Channel Splitter Module

2PM.


OSFM #1630 CARDOSFM #1630 CARD OSFM Stands for Optical Splitter Fiber

Module.

Used to add/drop OSC into/from network fiber.

OSFM is a passive module which has 3 ports.

Firstly, Network (N) port which goes to line fiber.

Second is user port(U) which is traffic port which goes to EDFA.

Finally, management port i.e. supervisory port (C) which is connected to OSCM.


1CSM+ #Cxxxx1CSM+ #Cxxxx-- E/W(1510)E/W(1510)

1CSM stands for 1 Channel Splitter Module East/West.

1CSM means we have to use only one port i.e. either NW or NE.

Basically this card is same as OSFM. The difference is OSFM works on 1630nm and CSM works on 1510nm.

2 ports i.e. NE & NW which goes to east and west direction line fiber respectively.


WCAWCA

WCA stands for Wave Length Converter.

Fiber losses are 5db higher in 1630nm wavelength as compared to 1510nm wavelength.

Hence, to convert the Supervisory wavelength from 1630nm to 1510 nm, OSFM (Filter Module) is replaced by a set of cards (WCA & CSM) that converts the wavelength from 1630nm to 1510 nm.

WCA card increases the supervisory threshold to 5db.

WCA is a 1510nm card while 1CSM is an interface card that acts as an interface between 1630nm and 1510nm wavelengths.


WCA Card Cabling DiagramWCA Card Cabling Diagram


2PM MODULE2PM MODULE 2PM is 2-port Protection module.

The 2PM contains two optical splitters and two optical couplers. Each of the two client signals are splitted into two optical paths (channels) with identical data. In the other direction, the light of the egress channels is combined into two client signals..

Client port connected to application.

NW (Network West) connected to West Channel card.

NE (Network East) connected to East Channel Card.


Some Basic Terminologies :Some Basic Terminologies :--

Noise Figure Ratio of OSNR on EDFA input to EDFA output.

Gain Output Power - Input Power.

OSNR - Optical Signal to Noise Ratio.


OSNR CalculationOSNR Calculation OSNR [dB at 0.1 nm] = 58 +Pout[dBm] 10 Log10(Nch)- Lsp NF [dB]+

Pin [dBm].where,

Pout = amplifier Output Power. Nch = No. of channels.Lsp = Fiber Span Loss in dB.Pin = Input Channel power.NF = Amplifier Noise Figure.10 * lg (Bfh) = 58

B is reference band width0.1nm = 12.5 GHz.f is c/wavelength 1550 nm= 1.93* 10^14 Hz.h is Planks constant = 6.626 * 10^-34 Js.


AMPLIFIER CARDSAMPLIFIER CARDS Gain Controlled EDFA.

EDFA-C-D17-GC. EDFA-L-D17-GC. EDFA-C-S18-GC. EDFA-C-D20-GC. EFFA-C-S20-GCB EDFA-C-D20-GCB.

Power Controlled EDFA.

EDFA-C-S10. EDFA-L-S10.


Three types of OFAs are deployed in DWDM systems:

* Erbium doped fiber amplifier (EDFA), (most commonly used)

* Semiconductor optical amplifiers (SOA),(Fluoride or Silica based)

* Raman fiber amplifiers (RFA).

Types of AmplifiersTypes of Amplifiers


The most common OFA in use is the EDFA.

This is a piece of optical fiber doped with Erbium ions (Er3+).

Optical amplifier has 2 main elements: the optical fiber that is doped with Erbium, and the Amplifier. When a laser pump is used to energize the erbium with light at a specific wavelength, erbium acts as a gain medium that amplifies the incoming optical signal.

Radiation from a powerful pump laser outside the data wavelength range is coupled into this fiber resulting in an amplification of the data signal.

Types of AmplifiersTypes of Amplifiers


EDFAEDFA--CC--S20S20--GCBGCB EDFA-C-S20-GCB is fixed gain

controlled, single stage Erbium Doped Fiber Amplifier.

Its Gain is fixed at 19 dB. It amplifies up to 40 channels in C band.

It is suitable for booster applications only.

It has a single N port for amplification.

Maximum Output Power +20 dBm. Minimum Input Power -32 dBm.


EDFAEDFA--CC--D20D20--VGCVGC

Double stage Erbium Doped Fiber Amplifier with a variable gain.

Supports upto 40 C-Band wavelength. Variable Gain 19 to 35 dB. Max Pout = +21dBm. Min Pin = -35dBm per channel. Max Pin total = +2dBm @ 19dB gain. The first gain block works as preamplifier,

the second as Booster amplifier. Midstage allows to insert a dispersion

compensation module of upto 16 dB loss without effecting the line budget.

2 Application ports.1st port is for Amplification & 2nd port is connected with DCG module to reduce the dispersion effect in the link.


The Dispersion Compensation Fiber Module (DCF-M / xxx / yyyy) is a managed DCM module.

Its attenuation is 10 db max. The standard single mode fiber of

DCF-M module is available with different length to fully compensate.

DCF-M/010/SSMF DCF-M/020/SSMF DCF-M/040/SSMF DCF-M/060/SSMF DCF-M/080/SSMF DCF-M/0100/SSMF Pin max is 0dB.

DCFDCF--M / xxx / yyyyM / xxx / yyyy


DCGDCG--M/xxx/SSMFM/xxx/SSMF DCG is Dispersion Compensation

with Fiber Bragg Grating Module. It can be used for Data rate upto 11.3

Gbit/s. The standard single mode fiber of

DCG-M module is available with different fibers to fully compensate.

DCG-M/060/SSMF DCG-M/080/SSMF DCG-M/0100/SSMF.

Links should use same module types (DCG and EDFAs) in both directions to keep Latency deviations as low as possible.

DCG used in the network.


TRAFFIC MODULES : GENERAL TRAFFIC MODULES : GENERAL FEATURESFEATURES

Client and network port on same module.

Wavelength conversation from Application to DWDM grid.

Receive is sensitive for Optical Overload results in DAMAGE.

Analog Performance monitoring.


TRAFFIC / ACTIVE CHANNEL CARDSTRAFFIC / ACTIVE CHANNEL CARDS 2TCA 1G Card.

10TCC 1 G Card.

4TCC STM 16 Card.


4TCC4TCC--PCPC--2G7+10G2G7+10G--V#DxxV#Dxx The 4TCC-PC-2G7+10G-V#Dxx is a

10 Gbps Core type TDM channel module.

It is a channel module with four pluggable Client ports and one aggregate Network port.

It multiplexes and demultiplexes the signal of upto four client interfaces on one wavelength.

The client interfaces support STM-16. The STM-16 client interfaces signals

at data rate of 2.488 Gbps are either transported transparently or regenerated at the regenerator section.


10TCC10TCC--PCPC--4GU+10G4GU+10G--V#DxxV#Dxx

The 10TCC-PC-4GU+10G-V is a core type 10-port TDM channel module with pluggable client interfaces.

It is a channel module with ten pluggable Client ports and one aggregate Network port.

The module performs electrical multiplexing and de-multiplexing.


2TCA2TCA--PCNPCN--1G3+2G51G3+2G5 The 2TCA-PCN-1G3+2G5 is an

Access type, 2-port multirate TDM channel module.

It features two client and two network Small Form-factor Pluggable (SFP) compliant ports.

The module is designed for transport of 2 x GbE or 2 x 1G FC at data rates of 1.2500 Gbit/s or 1.0625 Gbit/s

At the network port a proprietary protocol runs with a data rate of 2.48832 Gbit/s.


eROADM: Reconfigurable Optical Add Drop eROADM: Reconfigurable Optical Add Drop MultiplexerMultiplexer

eRoadm stands for Electronically Reconfigurable Optical Add Drop Multiplexer. Supports upto 40 channels/wavelengths. Dynamic Channel Equalization for pass-through wavelengths. Add/drop to main shelf. It regenerates the signals with same strength rather than amplification which in

turn reduces errors.


SEILIENT FEATURES OF eROADM.SEILIENT FEATURES OF eROADM.

Easy dynamic channel assignment to each node is possible. Less planning effort. Higher initial cost of systems with lesser traffic. Access to all wavelength available on each nodes- access restriction is

required. Separate 3HU shelf in 19 design. Design for 40 channels in 100GHz Grid D02 to D32 and DC1 to DC9. Always used with pre (single stage) and post (double stage) amplifiers. Bidirectional add/drops requires two eROADM shelf with 2 sets of pre

and post amplifiers. Also helps in maintaining channel power of all respective channels at the

same level through equalization process.


WAVELENGTH ALLOCATIONWAVELENGTH ALLOCATION The link below shows the wavelength allocation of DWDM.

The wavelengths allotted to 40 channels of the eROADM.

Wavelengths


Railtel ILA (In Line Amplifier)Railtel ILA (In Line Amplifier)

In a typical DWDM network we are having ILA based on fiber characteristics.

It amplifies in-coming signals from OADM and sends the same to next OADM location.

Distance between two ILA sites is approx. 50 Km.


SIGNAL FLOW DIAGRAM : ILA SIGNAL FLOW DIAGRAM : ILA


SIGNAL FLOW DIAGRAM : ILA with WCASIGNAL FLOW DIAGRAM : ILA with WCA


SIGNAL FLOW DIAGRAM : ILA With DCGSIGNAL FLOW DIAGRAM : ILA With DCG


SIGNAL FLOW DIAGRAM : eROADMSIGNAL FLOW DIAGRAM : eROADM


OADM StationOADM Station

OADM stands for Optical Add-Drop Multiplexing.

After approx. 300 km we have optical add drop multiplexer depending upon the fiber condition.

Also this also depends on the further design based on customer end to end requirements.

OADM Sites have EROADM In all direction.


OADM SFDOADM SFDSurat SFD (IP Add:10.0.33.87)

1CSM+#Cx-E/W

CW/D CW/M

NW/M

NW/D

NW/M NW/D

WCA-PCN

2G5U

C/T

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1-8 1-10 2-14 2-8

1-31-3

1-71-18 2-11 2-18 2-6

2OSCM-PN

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C2

C3

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e-ROADM (1

-20)

N/R

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C2

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1

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C4

EDFA-C-S20-GCB

EDFA-C

D20-VGC

2-20

2-5

EDFA-C-S20-GCB

1-5

1-6

EDFA-C

D20-VGC

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DCG-M

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1CSM+#Cx-E/W

CW/D CW/M

UW/M

UW/D

NW/M

NW/D

NW/M NW/D

WCA-PCN

2G5U

C/T

NE/R

NE/T

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WAYS TO ACCESSWAYS TO ACCESS

Serial line with Terminal Emulation (Hyper Terminal).

LAN access via Telnet.

LAN access via Web interface (like Internet Explorer) http/https.

LAN access Element Manager (EMS & NMS).

EMSNMS


NODE VIEW : MUMBAINODE VIEW : MUMBAI The link shows the Node view of Mumbai OADM.

Node View.


OPTICAL FIBER TYPESOPTICAL FIBER TYPES

Multimode Single-mode

2 Types


MULTI MODE FIBERMULTI MODE FIBER Fiber carries numerous light rays (mode) simultaneously through the fiber.

High attenuation 850 to 1300 nm transmission wavelengths Local networks (


SINGLE MODE FIBERSINGLE MODE FIBER Fiber carries a single light ray (mode).

Low attenuation

1260 to 1660 nm transmission wavelengths Access/medium/long haul networks (>200 km) Nearly infinite bandwidth Telecom.

CWDM/DWDM


ALARMS IN DWDMALARMS IN DWDM Some of the Basic Alarms are:

AIS Alarm Indication Signal. RDI Remote Defect Indications. (FERF- Far End

Receive Failure.) LOF Loss Of Frames. LOM Loss Of Multiplexing. LOS Loss Of Signal. UAS Unavailable Seconds. FEC Forward Error Correction.


UAS (Unassigned) Only equipment is available, facility is not available. MEA (Mismatch) Mismatch between physical hardware and configured

hardware. UEQ (Unequipped) Hardware is physically removed from the shelf. Physical Alarms like : Temperature High/Low.

: Rx. Power too High/low.: Fan abnormal.: Input voltage too High/Low.

CHARSYNC :Loss Of Char Sync (NEND, FEND). FWP Mismatch- Firmware Package mismatch. SD Signal Degrade. RMVD Equipment Removed.

ALARMS IN DWDMALARMS IN DWDM


ALARMS SNAP SHOTALARMS SNAP SHOT The below link shows some of the alarms observed in the NMS.

Alarm snap shot Network Port Alarms


WEEKLY REPORT SHEETWEEKLY REPORT SHEET The Report sheet contains two main concerns

Daily basis report on concerns regarding DWDM. DWDM Power Levels


e

c

Card Electronic

e

c

e

c

e

c

Client Rx.

Client Tx.

Network Tx.

Network Rx.

Facility Loop on Client Port (local loop)

LOOPS ON CLIENT PORT (contd.)


Terminal Port on Client Port

e

c

Card Electronic

e

c

e

c

e

c

Client Rx.

Client Tx.

Network Tx.

Network Rx.

LOOPS ON CLIENT PORT (contd.)LOOPS ON CLIENT PORT (contd.)


LOOPS ON NETWORK PORTLOOPS ON NETWORK PORTFacility Loop On network Port (Remote Loop)

e

c

Card Electronic

e

c

e

c

e

c

Client Rx.

Client Tx.

Network Tx.

Network Rx.


Terminal Loop on Network Loop (Local Loop)

LOOPS ON NETWORK PORTLOOPS ON NETWORK PORT

e

c

Card Electronic

e

c

e

c

e

c

Client Rx.

Client Tx.

Network Tx.

Network Rx.


Railtel DWDM NetworkRailtel DWDM Network


Railtel Optical Fiber NetworkRailtel Optical Fiber Network


DWDM LocationsDWDM Locations

OADM : Optical Add Drop Multiplexer- OADM Location are for adding and dropping the channels for the customer (STM-16 and 1G).

OLA/ ILA: Optical Line Amplifier / In Line Amplifier.

OLA Locations amplifies the signals so that they can travel longer distances to next OADM location.

ILA eRoadm : In Line Amplifier with eRoadm

ILA eRoadm locations is just like OLA along with eROADM for equalization and regeneration of the channels.


Western Region LocationsWestern Region LocationsOADM : 6 Locations -

Mahalaxmi, Pune, Bhusaval, Surat, Wardha, Nagpur

OLA/ ILA: 32 Locations -

Virar, Boisar, Bhilad, Valsad, Ukaisongarh, Nandurbar,Nardana, Jalgaon (2 nodes), Pachora, Chalisgaon,Belapur, Ahemadnagar, Daund(2 nodes), Bhigwan,Solapur, Dudhani, Malkapur, Shegaon, Akola, Badnera,Dhamangaon, Chacher, Tumsar Road, Salekasa,Rajnandgaon, Durg, Warora, Ballarshah, PanvelLonavala .

ILA eRoadm : 3 Locations -

Manmad, Gondia, Kurduwadi.


OADM / OLA and ILA eRoadm LocationsOADM / OLA and ILA eRoadm Locations


DCN DIAGRAM OF RAILTEL NETWORKDCN DIAGRAM OF RAILTEL NETWORK The below link shows complete DCN diagram of Railtel Network

DCN Diagram


IP DOCUMENTIP DOCUMENT

The document shows IP address details of the Nodes in Railtel Phase-1 for all 3 regions, South, East and West.

IP Document


The link shows the current design of DWDM Network in Western Region.

NDD Document 1

NDD Document 2

NDD (Nodal Design Documents) WESTERN NDD (Nodal Design Documents) WESTERN REGIONREGION


The link below shows the Current Live Circuits running under Western Region.

Live CircuitsTraffic Flow ChartLambda & Client Details

WESTERN REGION LIVE TRAFFICWESTERN REGION LIVE TRAFFIC


Thank YouThank You

Date post:	24-Nov-2015
Category:	Documents
Upload:	priyasingh1682
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