Chapter 09 - Summary and Conclusions

C H A P T E R N I N E

SUMMARY AND CONCLUSIONS

The demand for Internet traffic (IP traffic) continues to increase rapidly compared to traditional circuit switched telephone traffic, as the demand for greater bandwidth and faster connection speeds have led to new methods of broadband access to all consumers. The confluence of two forces, the g lobalization of business and the networking of information t echnology (IT), has created the Internet economy. The new economy is defining how people do business, communicate, shop, have fun, learn, and live on a global basis, connecting everyone to everything. The new economy is driven by information, research, knowledge and technology.

9.1 TELEPHONE DEMAND AND ITS DISTRIBUTION BY YEAR 2015

The forecast of telephone traffic was carried out based on traditional methods. However, in the future, a significant portion of telephone traffic in the PSTN are expected to migrate to IP Networks as VoIP is becoming a very cost effective solution for the customers who are having Corporate Networks and for the public who dial international destinations. However, the inter-working between the PSTN and IP Network is an issue yet to be addressed.

Initially the traffic forecast for a traditional circuit-switching network, the total demand by year 2015 was estimated as nearly 2 million. This was obtained through the Income Elastic Model, which uses the world trend for telephone subscribers of each country against economic indices such as GDP/GNP/NI.

The Nodes of the proposed Network were obtained based on the present distribution of customers in the county. All the Tertiary Switching Center areas and the Secondary Center Areas where the customer base is more than 2.5% of total customers, were taken as the main nodes of the network. Also two other nodes, Jaffna and Baticaloa, were selected to cover northern and eastern parts of the country as a significant traffic flows could be expected in the future with the development of these areas.

The Gravity model and Earlang's B formula (traffic tables) were used to find the telephone traffic between nodes and the number of circuits between nodes.

9.2 IP TRAFFIC DEMAND AND ITS DISTRIBUTION BY YEAR 2015

It was observed that the Internet penetration rate continues to increase and the traffic on Internet doubles every year and with that the web usage also growing rapidly.

Both the Internet dialup traffic and broadband traffic were estimated based on the present trend of these two services. In this case it was observed that the number of dialup Internet customers is now getting saturated. This is mainly because of the introduction of broadband services such as ADSL, which is now becoming very popular among residential customers. Accordingly the

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Chapter 09 - Summary and Conclusions

number of Internet Dialup customers was estimated as 57,800 by year 2015. The traffic flows between nodes were estimated assuming Internet Servers are made available in each node from which a directional traffic flow could be expected towards Colombo and vice versa.

The broadband IP traffic requirement for year 2015 was estimated based on the present trend, which has shown a rapid growth. As such, the number of IP broadband customers was estimated as 82,876 by year 2015. The traffic between network nodes were also estimated to ensure 50% throughput in the network when all the customers are connected.

In reality, a significant portion of these traditional circuits will migrate to IP platform as VoIP together with other IP services such as Internet and ADSL by year 2015. Finally the VoIP traffic was estimated assuming certain traffic migration patterns, which are based on IDD cost and traffic volume of corporate traffic. Considering the new broadband services and the traffic migration of International Traffic and a portion of the domestic traffic, from traditional circuit switched network to EP network as VoEP, the final bandwidth requirement between the network nodes were estimated for year 2015, after reducing the volume of business traffic, which are mostly confined to their corporate Networks. The results of the forecast clearly show the majority of its traffic will be generated from IP based services while the PSTN traffic will be a small portion and which could be less than 10% of the total bandwidth of the network.

However it was become a real challenge to forecast the IP traffic due to its unpredictable growth. Therefore the forecasted IP traffic volumes may not be very accurate as many other enhanced services such as multimedia services would also be developed to operate on IP networks.

9.3 NETWORK TOPOLOGY AND CAPACITY REQUIREMENTS

Based on the traffic distribution of both telephone and IP between nodes, a part of the network could be proposed as a fully reliable WDM Ring Network, while other nodes are connected through extended links. Accordingly, the traffic has been sorted to the network segments of the proposed Topology, where a part of the network is a Ring. The resulted WDM Ring Network, which basically covers the southern part of the country, needs 8 different wavelengths to support all kind of traffic and also two other extensions having a wavelength each to connect Northern and Eastern parts of the country. In This case an additional wavelength in the Ring Network and also a significant portion of capacity in the extensions were assigned to carry mobile traffic. Forecasting of mobile traffic happened to be a difficult task due to its unpredictable growth and mobility.

Each wavelength is assigned lOGbps, which is STM-64 to meet total traffic requirement. The Colombo and Kandy nodes are selected as Full Fiber Terminal Stations as most of the traffic flows between these two network nodes. Wavelengths are added and dropped at each branch station based on the traffic volumes between these nodes.

9.4 DESIGNING OF A REPEATERLESS OPTICAL NETWORK

The wavelengths are selected in the range of 1550nm such that adjacent wavelengths are spaced 0.8nm to avoid nonlinear effects and cross talks. The G.655 non-zero dispersion fiber is

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Chapter 09 - Summary and Conclusions

selected to manage the dispersion and non-linear effects. DFB and APD are the Source and the Detector respectively to suit long haul transmissions at a speed of lOGbps having narrow spectral widths and meet better sensitivity at the receiver.

The proposed Network is a Repeaterless Optical Network, where the Power Budget of the longest Segment of 280km between Kandy and Matara has been designed without employing a physical Repeater. This has been achieved by using Raman Amplifiers as Line Amplifiers and Erbium Doped Fiber Amplifiers (EDFA) as Boosters and Pre-Amplifiers. The Power Budget has been prepared for all other Segments based on different Amplifier Configurations. A BER of 10"9 is ensured for the longest Optical Line Section between Colombo and Kandy via Matara, in which a couple of express wavelengths are assigned. The Performance Budget is prepared for long Optical Sections and the calculated BER was obtained as better than 10"9.

9.5 SIMULATION OF THE NETWORK TO ENSURE DESIRED RESULTS

The entire Network was simulated on OptSim simulator, which was developed by ARTIS Software. The parameters of the simulated network are set to comply with designed and selected parameters. The Spectral Diagrams show the presence of all the wavelengths in the network having an appropriate S/N. The Eye Diagrams given by the Simulator further confirmed the BER objective and the Q Factors of electrical outputs are well above the Q Factor relevant to 10"9.

9.6 SUGGESTIONS FOR FUTURE WORK

It is suggested that resulted Eye Diagrams, particularly of the express wavelength of Colombo - Kandy via Matara network where the longest segment of Matara - Kandy is included, would be further improved by further enhancing the network.

On the other hand the economic factors of the proposed network would be compared against a network having Erbium Doped Fiber Amplifiers as line repeaters. This is suggested mainly because of the cost factor of high power Raman Pumps, which were used in some segments of the designed network.

The Raman Amplifier was developed based on Raman Scattering, which is a result of intrinsic property of silica fiber. Unlike Raman scattering, the Brillouin scattering occurs in a narrow band. As such the Brillouin Scattering is a useful feature to develop Optical Filters rather than Optical Amplifiers. It is suggested to any student to carry out some research on Brillouin Scattering to design optical filters that could be used in Optical Components.

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References

REFERENCES

[ 1 ] "Traffic Engineering Fundamentals" http://vvvvw.rbweb.cns.vt.edu (10 t h January 2003) [2 ] "What is an Erlang" http://www.erlang.com (4 t h March 2002) [3] Nippon Telegraph and Telephone East Corporation, "Network Planning", NTT

Training Institute, Tokyo, Chapter 02, 05 and 06, 1999. [4] "Gross Domestic Product and Gross National Product"

http://ww.nscb.gov.ph/rul2/DEFINE/DEF-ECO.HTM (15th April 2002) [5] Alan E. Willner and Synang-Myau Hwang "Transmission of many WDM channels

through a cascade of EDFA's in long distance links and ring networks" IEEE Joumel of Light wave Technology, Vol. 13, no. 5, pp. 802-816, 1995.

[6] Djafar K. Mynbaev, Lowell L. Scheiner, "Fiber Optic Communications Technology", Addisson Wesley Longman Pvt Ltd, pp 124-134, 2001.

[7] Rajiv Ramaswami, Kumar N. Sivarajan, "Optical Networks", Harcourt Private Limited, India, pp 207-209, 2000.

[8] N. S. Bergano, "WDM long-haul transmission systems," Paper TuFl (Tutorial), Technical Digest of the Optical Fiber Communication Conf. (OFC1998) San Jose, USA, Optical Society of America, pp.30, 2000.

[9] E. Desurvire, Erbium-doped fiber amplifiers, principles and applications, New York, NY. Wiley Interscience, 1994.

[10] P. C Becker, N. A. Olsson, J. R. Simpson, "Erbium-doped fiber amplifiers, fundamentals and technology", San Diego, CA. Academic Press, 1999.

[11] Kyo Inoue, Hiromu Toba and Kiyoshi Nosu "Multi-channel amplification utilizing an ER 3 + doped fiber amplifier" IEEE Journal of Light wave Technology, Vol.9, no.3, pp.368-374, 1991.

[12] H. Masuda, S. Kawai, K-I Suzuki, and K. Aida, "Ultrawide 72 nm 3 dB gain-band optical amplification with erbium-doped Fluoride fiber amplifiers and distributed Raman amplifiers," IEEE Photon. Technol. Lett., vol. 10, no. 4, pp. 516-518, 1998.

[13] T. Terahara, T. Hoshida, J. Kumsako, and H. Onaka, "128 x 10.66 Gbit/s transmission over 840 km standard SMF with 140 km optical repeater spacing (30.4 dB loss) employing dual-band Raman amplification," paper PD28 (Post deadline), Technical Digest of the Optical Fiber Communication Conf. (OFC 2000) Postdeadline Volume, Baltimore, USA, Optical Society of America, pp. PD28-1 to PD28-3, 2000.

[14] Kiyofumi Mochizuki, Noboru Edagawa and Yoshinao Iwamoto "Amplified Spontaneous Raman Scattering in fiber Raman Amplfiers" IEEE Journal of Light wave Technology, Vol.4, no.9, pp. 102-109,1986.

[15] D. Wang and C. R. Menyuk "Calculation of penalties due to polarization effects in a long-haul WDM system using a strokes parameter model" IEEE Journal of Light wave Technology, Vol.19, no.4, pp.487-494, 2001.

[16] G. J. Foschini, L. E. Nelson, R. M. Jopson and H. Kogelnik "Statistics of Polarization Mode Dispersion" IEEE Journal of Light wave Technology, Vol. 19, no.12, pp.412-505, 2001.

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References

[17] A. Berntson, E. Goobar, S. Popov, L. Helczynski, G. Jacobsen, J. Karlsson, "Influence of cross-talk and pump depletion on the design of Raman amplifiers for WDM systems," Proceedings of the 26th European Conference on Optical Communications (ECOC'OO), pp. 149-150 (Verlag), Sept. 5, 2000.

[18] The ITU Association of Japan Inc, "World Telecommunication Visual Data Book", ITU Association of Japan, Tokyo, Chapter 06, 2000.

[19] Central Bank of Sri Lanka, "Annual Report - 2001", Government Press of Sri Lanka, Colombo, pp 5-7, 2002.

[20] "G652, G653 and G655 Specifications" http://www.itu.int/itudoc/ (on 13 t h October 2002) [21] "Booster and Pre-Amplifier Specifications" http://www.alcatel.com/

(on 13 t h December 2002) [22] Shigeyuki Akita, Shigendo Nihsi "Optical Cable Network Systems", KDDI Ltd,

Tokyo, Chapter 11 and 12, 2001. [23] K. P. Kandancarachchi and I.J. Dayawansa "Repeaterless Optical Fiber Network for Sri

Lanka" IEE Paper of Annual Sessions, 2003. [24] T. I. Lakoba and G. P. Agrawal "Optimization of average dispersion range for long haul

dispersion managed systems" IEEE Journal of Light wave Technology, Vol. 18, no.l 1, pp.71-82, 2000.

[25] K. P. Kandancarachchi and I. J. Dayawansa "Telecommunication traffic forecast up to year 2015" IEE Paper of Annual Sessions, 2002.

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Radial Distance Chart (km)

Kalutara &i inmegata: Negombo Galle Anuradhap-

Matara ura BatHcaios &tffiia

Colombo - 9 5 . 4 5 2 3 . 9 8 4 1 . 4 6 8 4 . 0 3 3 0 . 3 4 1 0 8 . 3 9 1 3 4 . 7 4 1 6 7 . 5 2 2 2 2 . 7 6 2 9 6 . 4 8

9 5 . 4 5 - 7 3 . 8 4 1 0 8 . 2 6 3 5 . 7 1 8 7 . 6 8 1 4 7 . 2 7 1 4 9 . 9 7 1 1 8 . 4 3 1 2 7 . 3 5 2 6 0 . 7 1

2 3 . 9 8 7 3 . 8 4 - 5 7 . 0 3 6 0 . 0 5 2 1 . 0 8 1 2 0 . 3 8 1 4 1 . 5 5 1 4 5 . 4 4 2 0 1 . 0 4 2 7 7 . 6 4

KaMara 4 1 . 4 6 1 0 8 . 2 6 5 7 . 0 3 - 1 0 9 . 8 9 7 0 . 9 9 6 7 . 1 9 5 . 9 2 0 1 . 0 9 2 3 0 . 1 6 3 3 4 . 6 7

K?irunegHl* 8 4 . 0 3 3 5 . 7 1 6 0 . 0 5 1 0 9 . 8 9 - 6 5 . 8 4 1 6 1 . 9 9 1 7 1 . 9 5 9 4 . 8 4 1 4 9 . 1 9 2 3 5 . 2 8

3 0 . 3 4 8 7 . 6 8 2 1 . 0 8 7 0 . 9 9 6 5 . 8 4 - 1 3 7 . 0 5 1 6 0 . 6 4 1 3 9 . 9 8 2 1 2 2 6 6 . 3 9

&m 1 0 8 . 3 9 1 4 7 . 2 7 1 2 0 . 3 8 6 7 . 1 1 6 1 . 9 9 1 3 7 . 0 5 - 3 7 . 9 8 2 5 6 . 7 2 2 4 9 . 2 9 3 9 5 . 0 9

frfaiara 1 3 4 . 7 4 1 4 9 . 9 7 1 4 1 . 5 5 9 5 . 9 1 7 1 . 9 5 1 6 0 . 6 4 3 7 . 9 8 - 2 6 6 2 3 4 . 9 8 4 0 7 . 2 2

AOttradhajpura 1 6 7 . 5 2 1 1 8 . 4 3 1 4 5 . 4 4 2 0 1 . 0 9 9 4 . 8 4 1 3 9 . 9 8 2 5 6 . 7 2 2 6 6 - 1 5 7 . 8 2 1 4 2 . 2 8

2 2 2 . 7 6 1 2 7 . 3 5 2 0 1 . 0 4 2 3 0 . 1 6 1 4 9 . 1 9 2 1 2 2 4 9 . 2 9 2 3 4 . 9 8 1 5 7 . 8 2 - 2 6 9 . 2 1

Jaffna 2 9 6 . 4 8 2 6 0 . 7 1 2 7 7 . 6 4 3 3 4 . 6 7 2 3 5 . 2 8 2 6 6 . 3 9 3 9 5 . 0 9 4 0 7 . 2 2 1 4 2 . 2 8 2 6 9 . 2 1 -

Coefficients of Affinity (C f i | T >)

Colombo: Jtandj Gampaha JdalufcaraEurunegala: ffegODlbff: : : G a t e M a t e a A n u r a d h a p u r a : & <JaSha

Colombo - 0.02607 0.07873 0.05080 0.02887 0.06522 0 02355 0.01979 0.01662 0.01324 0.01053

0.02607 - 0.03202 0.02357 0.05725 0.02790 0 01843 0.01816 0.02194 0.02070 0.01167

0.07873 0.03202 - 0.03937 0.03777 0.08728 0 02165 0.01902 0.01861 0.01437 0.01110

Kitfufctta 0.05080 0.02357 0.03937 - 0.02329 0.03304 0 03456 0.02597 0.01436 0.01289 0.00956

0.02887 0.05725 0.03777 0.02329 - . 0.03509 0 01708 0.01628 0.02621 0.01824 0.01267

0.06522 0.02790 0.08728 0.03304 0.03509 - 0 01952 0.01719 0.01919 0.01377 0.01147

vm 0.02355 0.01843 0.02165 0.03456 0.01708 0.01952 - 0.05449 0.01181 0.01210 0.00837

Matara 0.01979 0.01816 0.01902 0.02597 0.01628 0.01719 0 05449 - 0.01148 0.01268 0.00817

Anuxadhapura ; 0.01662 0.02194 0.01861 0.01436 0.02621 0.01919 0 01181 0.01148 - 0.01744 0.01894

Battteafra 0.01324 0.02070 0.01437 0.01289 0.01824 0.01377 0 01210 0.01268 0.01744 - 0.01137

0.01053 0.01167 0.01110 0.00956 0.01267 0.01147 0 00837 0.00817 0.01894 0.01137 -

Where;

a = 0.8 & k = 1 (From Case Studies) d<y) = Distance from "i" to "j" ^

Traffic flow between Offices (ffi.fi) CoI«Habt> Kan*? SaJJe ajpura Battfcatrai Jaflfca

- 13,102 15,603 16,600 5,990 12,931 2,941 3,101 2,099 1,950 233

7,426 - 530 644 993 462 192 238 232 255 22

Gampaha 3,496 210 - 168 102 225 35 39 31 28 3

KaMata 5,717 391 258 - 160 216 143 134 60 63 7

KwunegaJa 2,788 815 212 131 - 197 60 72 94 76 8

3,425 216 267 166 112 - 38 42 37 31 4

1,761 203 94 248 78 135 - 187 33 39 4

Vtatara 2,183 295 122 275 109 110 220 - 47 60 6

Anuradhapura:: 1,709 333 111 142 164 115 45 54 - 77 13

Bafrieataa 1,937 447 122 181 163 117 65 85 95 - 11

298 49 18 26 22 19 9 11 20 14 -

Where; $ij> = Traffic from Office "i" to Office "j" D, = Originating Traffic rom Office "i" C(ij) = Coefficients of affinity Dj = Originating Traffic rom Office "j"

And; Di = (Number of Subscribers in the "i" Area) x (Calling Rate of "i" Area)

0 4 4

Number of circuits required between Offices (nn.n)

Cotornho Stand} Gampaha:: Ka.ufara Sdirunegafc:

Negombo Gate Anuradhap-

Matara ura BahJca.oa:: Jaflfla

- 1 3 , 5 2 2 1 6 , 1 0 0 1 7 , 1 2 8 6 , 1 9 0 1 3 , 3 4 5 3 , 0 4 7 3 , 2 1 1 2 , 1 7 8 2 , 0 2 5 2 5 5

R a n d y © 7 , 6 7 1 - 5 6 1 6 7 8 1 , 0 3 8 4 9 1 2 1 3 2 6 0 2 5 3 2 7 7 3 2

Gampaha {if 3 , 6 1 8 2 3 1 - 1 9 0 1 2 0 2 4 7 4 7 5 2 4 3 3 9 8

Kalutara 5 , 9 0 9 4 1 8 2 8 0 - 1 8 0 2 3 8 1 6 3 1 5 4 7 5 7 8 1 4

Knrunegata 2 , 8 8 9 8 5 5 2 3 3 1 5 0 - 2 1 8 7 5 8 8 1 1 1 9 2 15

3 , 5 4 5 2 3 7 2 8 9 1 8 6 1 3 0 - 5 1 5 5 4 9 4 3 1 0

llilllllllll 1 , 8 3 0 2 2 4 1 1 0 2 7 0 9 4 1 5 4 - 2 0 8 4 5 5 2 1 0

Matara 2 , 2 6 5 3 1 9 1 4 0 2 9 8 1 2 6 1 2 9 2 4 2 - 6 1 7 5 13

Amradflapur* 1 , 7 7 6 3 5 8 1 2 9 1 6 1 1 8 4 1 3 3 5 8 6 8 - 9 3 2 2

Battteafra 2 , 0 1 2 4 7 5 1 4 0 2 0 1 1 8 3 1 3 5 8 0 1 0 3 1 1 2 - 1 9

fs&thst 3 2 2 6 3 2 8 3 7 3 2 2 9 1 6 1 9 2 8 2 3 -

oo

Assume; Loss Brobabflity =0.01 (GOS)

Note: 1) For Traffic less than 179 Erlg - Traffic Tables

2) For Traffic more than 179 Erlg - Equation : n = 200+ (Traffic Offered -179.74) / 0.97

Equivalent Circuits required for IP Traffic

i s o t o n i c Kandy : Gampaha:: Kalutara Kurunegak::

a. i^egofflfa& Galle jAnnradhap-^

Matara ura xBaUJeafoa-::- Jaffna

Cotombi* - 1 5 9 , 3 5 9 6 3 , 4 9 4 1 0 3 , 3 3 4 6 5 , 9 8 4 6 3 , 4 9 4 3 9 , 8 4 0 4 9 , 8 0 0 3 9 , 8 4 0 4 7 , 3 1 0 4 , 9 8 0

- - - - - - - - -

Gampahfc - - - - - - - - -

Kaiufiara - - - - - - - - -

Kwtwegafe - - - - - - - - -

- - - - - - - - -

QaBte - - - - - - - - -

Sfatara - - - - - - - - -

Aniwadhajpura - - - - - - - - -

- - - - - - - - -

Jatrri» - - - - - - - - -

nfTotal $£);;;;*=::;; n i f r t e m e t ) ; j ; n ( x M L )

Equivalent circuits of migrated Business Traffic to VoIP by year 2015

Kandy 6 amp ana KahitaraKnninegat-a::$> Galte Matara Anuradhap­

ura Batticaloa - -tJsf&is

- 2,028 2,415 2,569 928 2,002 457 482 327 304 38

1,151 - 84 102 156 74 32 39 38 42 6

543 35 - 28 18 37 8 8 7 6 3

Kajutara 886 63 42 - 27 36 24 23 11 12 3

433 128 35 22 - 33 12 13 17 14 3

532 36 43 28 20 - 8 9 8 7 3

275 34 17 41 14 23 - 31 7 8 3

340 48 21 45 19 19 36 - 9 12 3

266 54 19 24 28 20 9 11 - 14 4

Baitieataa 302 71 21 30 27 20 12 15 17 - 4

laftina 48 10 5 6 6 5 4 4 5 4 -

n(Business) ::. •:. .=•::::: Total Circuits X 20% X 7 5 %

<

Equivalent circuits of migrated International Traffic to VoIP by year 2015

4SoJomha: Kandy Gampaha KahilaraKunmegata ftegoiribe- Galle xMataraAnui^hapnraBail iestoa: xJaifha

Cofomb* - 230 274 291 105 227 52 55 37 34 4

KaftSy 130 - 10 12 18 8 4 4 4 5 1

Garo£aM 62 4 - 3 2 4 1 1 1 1 0

Katntata 100 7 5 - 3 4 3 3 1 1 0

Kuttiftfcgala 49 15 4 3 - 4 1 2 2 2 0

60 4 5 3 2 - 1 1 1 1 0

Galle 31 4 2 5 2 3 - 4 1 1 0

Rfetflra 39 5 2 5 2 2 4 - 1 1 0

30 6 2 3 3 2 1 1 - 2 0

34 8 2 3 3 2 1 2 2 - 0

5 1 1 1 1 1 0 0 1 0 -

International Traffic carrying circuits (equivalent) to be migrated to Vo IP = (Total Circuits) x 1.7%

n(IntT) = Total Circuits x 1.7%

Equivalent circuits of migrated Domestic Traffic to VoIP by year 2015

Galle Amrradha*

Matara para Battieatoa <JaBha

- 4,057 4,830 5,138 1,857 4,004 914 963 654 607 77

Kaady 2,301 - 168 204 311 147 64 78 76 83 11

Gampaha 1,086 69 - 56 36 74 15 16 14 13 5

Katafetra 1,773 125 84 - 54 71 49 46 23 24 7

Kitftmegal* 867 257 70 45 - 65 23 27 33 28 7

1,064 71 87 56 39 - 16 17 16 14 6

om 549 67 34 81 28 46 - 62 15 17 6

679 96 42 89 38 39 73 - 19 23 6

533 107 39 48 55 40 18 21 - 28 8

604 143 42 60 55 41 24 31 34 - 8

Jaffa* 97 19 10 12 11 10 7 8 11 9 -

n^Domesdc) ::: » :: Total Circuits x 30%

Total equivalent circuits migrated from the traditional PSTN

Colombo Kandy Gampaha KahifcaraKnmnegata: Gafie ^Matara Anuradhap-::

ttra •:&Mfeatoay:- Jaffna

- 6,315 7,519 7,999 2,891 6,232 1,423 1,500 1,017 946 119

Kandy 3,582 - 262 317 485 230 99 121 118 130 17

Gampaha 1,690 108 - 88 56 115 24 26 22 20 8

Kalutara 2,759 195 131 - 84 111 75 72 36 37 10

K&unegafe 1,349 399 109 70 - 102 36 42 52 44 11

1,656 111 135 87 61 - 25 27 25 22 9

om 855 105 52 126 44 72 - 97 23 26 9

Watara 1,058 149 66 139 60 60 113 - 29 36 10

Snttradhapttt^; 830 167 60 75 86 62 28 33 - 44 13

BaHjeataa 940 222 66 94 85 63 38 48 52 - 12

laf lna 150 30 16 19 17 16 11 12 16 14 -

I

Kquivalent circuits required to support VoIP traffic

Colombo Kandj Gampaha Kalutara kiinineitat

S I * .\egombo Galle Matara Anuradhap­

ura Batticaloa Jaffna

- 536 638 679 245 529 121 127 86 80 10

Kandv 304 - 2" 11 1 9 8 10 10 11 1

( ::imp:ili:i 143 9 - 7 5 10 2 2 2 2 1

Kalutara 234 17 I I - _ 9 6 6 3 3 1

Kurunegala 114 3 t 9 6 - 9 3 4 4 4 1

Negombo 140 9 11 7 5 - 2 2 2 2 1

GaOe 73 9 4 11 •1 6 - 8 2 2 1

5j*t«* 90 13 6 12 5 5 10 - 2 3 1

Amtradhsptir a 70 11 5 6 5 2 3 - 4 1

Battieatoa 80 19 6 8 5 3 4 4 1

Jaffna 13 3 1 2 1 1 1 1 1 1

C o m p r e s s i o n Rate 8 :1

n(VoIP> [ n(Int' I) + n (Domestic) ] / 8

Note: The equivalent circuits of Business traffic are not reflected back on to the VoIP requirement, as it is going to be confined in to their Corporate Networks

Total Equivalent Circuit Requirement of the Network

Goiomoo: KandyGampaha Kalutara Kurnnegak

a KegQlritMJ:: Galle Matara Anuradhap^:

lira Batticaloa Jaffna

Colombo - 167,102 72,714 113,142 69,529 71,136 41,584 51,639 41,087 48,469 5,126

Kandy 4,392 - 322 389 595 281 122 149 145 159 16

2,072 132 - 110 69 142 25 29 23 21 0

3,383 239 161 - 103 136 94 88 42 44 5

Kurunegala 1,654 490 134 86 - 125 42 50 64 52 5

2,030 136 166 107 75 - 28 30 26 23 2

Galfe 1,048 128 62 155 53 88 - 119 24 28 2

Matara 1,297 183 80 171 72 74 138 - 34 42 4

A^ra^dham»a 1,017 205 74 92 105 76 32 38 - 53 10

Batticaloa 1,152 272 80 115 105 77 45 59 64 - 8

Jaffna 184 35 14 19 16 14 6 8 13 11 -

n(Total> = n(PSTN> + n(IP) + ofVoD?) - n( Lost)

Total Bandwidth requirement in equivalent PCMs

Kandy MfegOttlbA Gafk A l

Matara Batncatos •x-xjaffiia

- 5,571 2,424 3,772 2^18 2,372 1,387 1,722 1,370 1,616 171

Rand? 147 - 11 13 20 10 5 5 5 6

70 5 - 4 3 5 1 1 1 1

113 8 6 - 4 5 4 3 2 2 1

56 17 5 3 - 5 2 2 3 2

68 5 6 4 3 - 1 2 1 1 1

35 5 3 6 2 3 - 4 1 1 1

44 7 3 6 3 3 5 - 2 2 1

34 7 3 4 4 3 2 2 - 2 1

Batttealoa 39 10 3 4 4 3 2 2 3 - 1

Jaflha 7 2 1 1 1 1 1 1 1 1 -

Note: 1 x PCM = 30 x Equivalent Voice Channels

Bandwidth Requirement Between Offices (No. of PCMs)

Kanth Gampaha Galle Matara B r a Jaffna

- 5,718 2,494 3,885 2,374 2,440 1,422 1,766 1,404 1,655 178

Kandy - 16 21 37 15 10 12 39 16 3

- 10 8 11 4 4 4 4 2

7 9 10 9 6 6 2

- 8 4 5 7 6 2

- 4 5 4 4 2

Sidle - 9 3 3 2

- 4 4 2

- 5 2

- 2

-

;;;; PGMrhjtal) j '±; P G M ( 6 f B c e | T to Office ;?') PCM(6|lice: "i"va Office i - i r j i i j :

>

Routing the Traffic Paths through Network Segments

Kururtegak Anuraxtliaj*-. Colombo Kjffidy €ampalut Kahitaro a Negombo Gatte Matara ttta Batficaloa Jaffna

Colombo 8, 9, 10,

- 11 1 11 1 ,2 ,3 1,2 10,11 9 ,10 ,11 1 ,2 ,3 ,4 7 , 8 , 9 ,10 ,11 1 , 2 , 3 , 4 , 5

Kaftdy 2 , 3 , 6 8 , 9 , 1 0 6 3 , 6 8 , 9 8 4 , 6 7 5 , 4 , 6

Gampaha - - - 1,11 2 , 3 2 1,10,11 1 ,9 ,10 ,11 2 , 3 , 4 2 , 3 , 6 , 7 2, 3 , 4 , 5

Kalufara - 6 , 8 , 9 , 1 0 1,2,11 10 9 ,10 4, 6, 8, 9 ,10 7 , 8 , 9 ,10 4 , 5 , 6 , 8 , 9, 10

Kurunegala . 3 6, 8, 9 8, 6 4 6 ,7 4 , 5

Negomho - - 1 ,2 ,10 ,11 1 , 2 , 9 , 1 0 , 1 1 3 , 4 3 , 6 , 7 3 , 4 , 5

Gatte - - 9 4, 6, 8 ,9 7 , 8 , 9 4 , 5 , 6 , 8 , 9

fcjatara - - - 4, 6 , 8 7 , 8 4 , 5 , 6 , 8

Anuradhapura - - - - 4, 6 ,7 5

Batticatoa - - - 4 , 5 , 6 , 7

Jaffrtft - - - -

lColombo - Gampaha 4Kurunegala - Anuradh. 7Kandy - Batticaloa lOGalle - Kalutara 2(jampaha - Negombo 5Anuradhapura - Jaffha 8Kandy - Matara 1 lKalutara - Colombo 3Negombo-Kurunegala 6Kurunegala - Kandy 9Matara - Galle

Appendix! 5

WDM (08 WAVELENGTHS) NETWORK SEGMENT FROM COLOMBO TO KANDY VIA KimUNEGAbA ,5M<U>MP_*1 - • • Colombo Fttll Fiber f ennlnal Station Gampalta Branch Station (Add/Drop L7&L8)

[dm] {OvtlMlfi

Negombo Branch Station (Add/Drop L5.L6&L8)

3W<LKN0l

Kurtwegala Branch Station (AdriVDrop L3JL4AL8) •

•ii LMi±

kandy Full Fiber Terminal Station

ro<itp<t-».;.

5P B* ..I < >P«LKMOlA,l>_TM

Unit: Hu_HDH_CrlB_kDV_vjajCNGLfi

-109-

Appendix 16

tlDM (08 HAVEtEHGTHB) METHORK SEG11EHT FROM COL01IBO TO RAHDY WIA MATARA

Kalutara Branch Station (Add/Drop L78L8) Colombo Full Fiber Terminal Station

UWt: Nu.W)H.C«B;Kl)Y.vla.Hflt

-110-

Appendix 17

K U R U N E G A L A - A i n m A D H A P U R A N E T W O R K S E G M E N T

Kurunegala terminal Station Anuradhapura Terminal Station b 19, l in lL0 t i t |_KNbi /LANbPRA

(Output1 >lnputj. (->lnput) (Output->lnp<it)

ANOPA>lw_PMAmp (Qijtput-̂ JF

b23

i|PKLt<NOlA

Ha

RX1

Output->

iSptctANDPA

1> SC0Pt_ANOPA

Unit: Nw_KNGLMNDRfl_Flnal

-111-

Appendix 18

MHJRAD HAPURA - JAFFHA IfETWORK SEGMENT

Aioiradhapura Terminal Station A O P B ^ l i i a L i K i j i h a w t . ANDPA,NW_ Booster

(Output->lnput) (Output

>

b18 b 13jinh_otli|_AND P R A_ J F PNA (Output->tnput)

Jaffna Terminal Station JFFNA,NW_PreAmp b22 JF FNA,1V_ R X 1_A PDfilhft

(-Mnpu — - — > m . •4

V SptctAhDPA

RX1

V SptcLJFFNA Output ->

LSCOPOFFNA

Unit: Nw.flNDR A_ JFFN A_F i na 1

-112-

Appendix 19

KANDY - BATTICALOA NETWORK SEGMENT

Kandy Terminal Station KDV_!>^TXt_NR2rtCt kOV>IW_BOOst«l-

TX1 (output-rtnpiiH (output-)) ±

| , t j b6,ltnLotnLKOV_BAI (-Mnput)

J ISPMCKOV

(Oulpnt->lnpnt) VWfrJH

BAT,NW_PrtAmp (Outpot->)

Batticaloa Terminal Station

bi8 BAT_RHH>_RXi_APOfllWl

4" (->lnp«t) , RX1

Output •

SP*CLBAT 5C0PCBA1

Unit: Nu.KbY'.BflT.Finai

- 1 1 3 -

Appendix 20

Spectral and Eye Diagrams of Colombo - Kandy Network via Kurunegala

1) Input of the Gampaha Main Fiber

N w _ W D M _ C M B _ K D Y _ v t a _ l < N G t A O p t i c a l S p e c t r u m at b.397, S p e c L G M P J n , R u n 1

i I I

I y I V u I Ij ! ) i•

I V v i ..̂ :

^ w l Jl 192 191.I 19?.1 19I.fi 192.0

2) Output of the Gampaha Main Fiber

193 193. i

r 4 w _ W D M _ C M f i _ K D Y _ v i ; 3 _ K N G L A : O p t i c a l S p e c t r u m at b.89, S p e c l j 3 M P j D u t . R u n 1

192 192.2 192.4 lS2.fi 192.0

-114-

Appendix 20

3) Input of the Negombo Main Fiber

N w _ W D M _ C M B _ K D Y _ v i a _ K N G L A O p t i c a l S p e c t r u m at b 4 0 2 , S p e c t _ N G B J n , R u n 1

dB (tnty THn ]

20

10

192 192.2 192.4 192.6 192 .fl 193 193 . 2

T t e i i u e n c v (THn J

4) Output of the Negombo Main Fiber

N w _ W D M _ C M B _ K D Y _ v i a _ K N G L A . O p t i c a l S p e c t r u m a l b 4 G 7 , S p e c t _ N G 8 _ 0 u t , R u n 1

IB [ m l V T H i ]

10

192 192.2 192.4 192.0 192.0 193 193.2

r r c q u e n c y [ T H a ]

- 1 1 5 -

Appendix 20

5) Input of the Kurunegala Main Fiber

N w _ W D M _ C M B _ K D Y _ v i a _ K N G L A : O p t i c a l S p e c t r u m at b 4 1 2 , S p e c t _ K N G L A J n , R u n 1

IB I n W T H i )

191 191.2 19E.4 192.6 192.6 193 193 . 2

6) Output of the Kurunegala Main Fiber

N w _ W D M _ C M B _ K D Y _ v i a _ K N G L A ' O p t i c a ! S p e c t r u m at b 8 4 , S p e c t J ^ G L A j D u t , R u n I

dB ( m l V T H s ]

20

192 192.2 192.4 192.6 192.0 193 193.2

r t c t r u e n c y [THi ]

-116-

Appendix 20

7) Dropped wavelength (A.x) at Gampaha

N w _ W D M _ C M B _ K D Y _ v i a _ K N G L A O p t i c a l S p e c t r u m at 6 6 , Spect_GMP_L8_R». R u n 1

i

j /

y . \

l » : 192.2 172 .1 192.8 192. A

8) Added wavelength (X%) at Gampaha

Nw_WDM_CM8_KDY_vla_KNGLA Optical Spectrum al b121, Spect_OMP_LB_Tx, Run 1

192 192.1 191.* 192.6

193 193.2

• 'i i i n • •• [TKa]

19] 193.2

-117-

Appendix 20

9) Dropped wavelength (A,7) at Gampaha

N w _ W D M _ C M B _ K D Y _ v i a _ K N G L A : O p t i c a l S p e c t i u m at 0 1 9 1 , s p e c t _ G M P _ L 7 _ R x , R u n 1

4B [ihWTHd]

0

-10

-to

-30

-40

-SO

192 192.2 192.4 19Z.fi 192.0 193 193.2 recipiency [THm)

10) Added wavelength (A,7) at Gampaha

N w _ W D M _ C M 8 _ K D Y _ v i a _ K N G l . A O p t i c a l S p e c t r u m at b 1 9 2 , s p e c t _ G M P _ L 7 _ T x , R u n 1

IB IntyTH*)

20 — j ; ;- -;

10

-50 • r i r - , [•-,

192 192.2 192.4 192.6 192.0 193 197.2

f i e i i u e r i c y | T H o )

-118-

Appendix 20

1 1) Dropped wavelength (>**) at Negombo LIBRART

amvresirr o i m o r a t u w a , S R i u u a k M O R A T U W A ^ *

N w _ w n M _ C M B _ K D V _ v i a _ K N G L A O p t i c a l S o e c t r u m at b195. S p e c t _ N G B J R_Rx , R u n 1

DB - W T H I L

1 • i ... ; 1 \ i

\ I : J.

1 | | I I j \ i 1

\7 X : _ ! 1 .

192 192 . 1 192.4 192 . 6 192 .» 19J 193.2

12) Added wavelength at Negombo

N w _ W D M _ C M H _ K D Y _ v i a _ K N G L A O p t i c a l S p e c t r u m at b i 9 6 . Spect_NOB_L8_T«. R u n 1

J I 1 : : :

, ^ ^ t "'''"'h'J'f^i

pfPI' I I ''"!'k • • • • 1,11 • < • • • i ii"'l'u iil'iL

i i ' ' " ' ; " ! " ' ..t l j i l i ,!,

i i i

i i ' ' " ' ; " ! " ' ..t l j i l i ,!,

* 1 I — ^ 1 192 192.2 1 9 2 . 4 192.6 192. a 193 193

S 0 5 0 2

-119-

Appendix 20

13) Dropped wavelength (k6) at Negombo

N w _ W D M _ C M B _ K D Y _ v i a _ K N G L A O p t i c a l S p e c t r u m at b 2 0 9 , s p e c t _ N G B _ L 6 _ R x , R u n 1

dB (n>U/THa]

j

i J :

/

192 192.Z 192.4 192.5 192.0 193 193.2

r r c t r u e n c v (THa )

14) Added wavelength (A,6) at Negombo

N w _ W D M _ C M B J < D Y _ v i a J < N G L A : O p t i c a l S p e c t r u m at b 2 1 • , s p e c t _ N G B _ L 6 _ T x , R u n 1

dB t m U / T H m ]

10

0

-40

192 192.2 192.4 192.6 192.8 193 193.2

-120-

f r e q u e n c y [ T H s ]

Appendix 20

15) Dropped wavelength (X5) at Negombo

N w _ W D M _ C M B _ K D Y _ v i a _ K N G L A : O p t i c a l S p e c t r u m a t b 3 2 u , . s p e c t _ N G 8 _ L 5 _ R x , R u n 1

192 192.2 192.4 192.S 192.0 193 193.2

f r e q u e n c y ( T H B |

16) Added wavelength ( k 5 ) at Negombo

N w _ W D M _ C M 8 _ K D Y _ v i a _ K N G L A : O p t i c a l S p e c t r u m at b 3 1 9 , s p e c t _ N G B _ L 5 _ T x , R u n 1

192 192.2 192.4 192.fi 192.8 193 193.2

rceouencv [ T H i

-121-

Appendix 20

17) Dropped wavelength (Xg) at Kurunegala

• N w _ W D M _ C M B _ K D Y _ y i . a _ K N G L A O p t i c a l S p e c t r u m at b 2 2 4 , S p e c t _ K N G L A _ L 8 _ R x , R u n 1..

/ / \

1 72 192 t 192 4 192.fi 1 9 2 . 1 7 7 193.2

18) Added wavelength (A*) at Kurunegala

Nw_WDM_CMD_KOY_via_KNGLA: Optical Spectrum at b225, Spe ct__KNGLA_LB_Tx, Run 1

192.2 192.4 192.fi 192.«

T i e c f u e n c v [ T H a ]

-122-

Appendix 20

19) Dropped wavelength (A.4) at Kurunegala

N w _ W D M _ C M B _ K D Y _ v i a _ _ K N G L A : O p t i c a l S p e c t r u m at b 2 3 B , s p e c t J < N 0 L A _ L . 4 _ R x , R u n 1

0

-10

-to

-30

-40

-30

1 9 2 1 9 2 . 2 192.4 192.fi 192.0 1 9 3 193.2

f x e q u c n c y [ T H o ]

20) Added wavelength (X 4 ) at Kurunegala

N w _ W D M _ C M B _ K D Y _ v i a _ K N G L A : O p t i c a l S p e c t r u m at b 2 3 9 , s p e c t _ K N G L A _ L 4 _ T x . R u n 1

dB [ iaW T H i ]

20 — ' ; ; j. -; ;-

10

192 192.2 192.4 192.6 192.0 193 193.2

T x c q u e n c v ITH»1

-123-

Appendix 20

21) Dropped wavelength (A )̂ at Kurunegala

N w _ W D M _ C M B _ K D Y _ v t a _ K N G L A : O p t i c a l S p e c t r u m at b 3 3 7 , s p e c ! _ K N G L A _ L 3 _ R x , R u n 1

dB [ m W T H i ]

192 192.2 192.4 192.6 192.6 193 193.2

r e c i p i e n c y [THa ]

22) Added wavelength (X3) at Kurunegala

I M w _ W D M _ C M 8 _ K D Y j / i a _ K N G L A : O p t i c a l S p e c t r u m a t b 3 3 6 , s p e c t _ K N G l _ A _ L 3 J \ R u n 1

dB [ n t W T H a ]

192 192.Z 192.4 192.6 199 193.2

-124-

f r e q u e n c y ( T H B )

Appendix 20

23) Eye Diagram of X% at Gampaha Branch Station

— N w _ W D M _ C M 8 _ K D Y _ y i a _ _ K N G L A : E y e D i a g r a m a t b 1 4 2 , S c o p e _ G M P _ L B , R u n 1

imiillMI)dMM«l«M:HEiafiB1 Q Value: 4 4 . 2 3 |lin] Q Va lue : 3 2 . 9 1 4 3 3 4 [dB]

24) Eye Diagram of X7 at Gampaha Branch Station

N w _ W D M _ C M B _ K D Y _ v i a _ K N G L A : E y e D i a g r a m at b1 8 4 , S c o p e _ G M P _ L 7 , R u n 1

o.oooa -

0 . 0 Z 5 0 . 0 5 0 . 0 7 5 O . J . O.XZS 0 . J . 5 O . i T S

Q Value: 26 .3931 [tin] Q Value: 28 .431 7 8 7 [dB]

-125-

Appendix 20

25) Eye Diagram of /lg at Negombo Branch Station

— N w _ W D M _ C M B _ K D Y _ v i a _ K N G L A : E y e D i a g r a m a t b 1 9 9 , S c o p e _ N G B _ L B , R u n 1

26) Eye Diagram of \<, at Negombo Branch Station

— N w _ W D M _ C M B _ K p y _ y i a _ K N G L A : E y e D i a g r a m at b 2 0 8 , S c o p e _ N G B _ L 6 , R u n 1

iam^^iJBiBMU.i=iu^jffaitfJUBF.ftiJH fjjmtiiyiJii

-126-

Q Value: 20 .5141 [lin) Q Value: 2 6 . 2 4 1 0 4 3 [dB]

Appendix 20

27) Eye Diagram of A.5 at Negombo Branch Station

— Nw_WDM_CMB_KDY_vla_KNGLA Eyo Diagram at b321, Scope_NGB_L5. Run 1

r -Ih

Q Value 19 3602 |lir>] Q Value 25 73B21 3 [dB | 0 0748571 IrulDsenion Thee -hold 10

28) Eye Diagram of X* at Kurunegala Branch Station

— N w _ W D M _ C M B _ K D Y _ v i a _ K N G L A E y e D i a g r a m at b 2 2 8 , G c o p e „ K N G L A _ L 8 . R u n 1

o. oo n 3

o oo IZ I

o • • 11 ,> " •. 0 0 0 0 3

0 . 0 0 0 2 3

T i m * ( n * 1 -J l

S 30359*-005 la u

-127-

4

Appendix 20

29) Eye Diagram of X4 at Kurunegala Branch Station

— N w _ W D M _ C M B _ K D Y _ y i a _ K N G L A : E y e D i a g r a m at b 2 3 7 , S c o p o _ K N G L A _ l . 4 , R u n 1

j j ^ j j j j j j ^ ^ | • Value: 14.32B1 [lin] Q Value: 2 3 . 1 2 3 7 4 7 [dB]

30) Eye Diagram of at Kurunegala Branch Station

— N w _ W D M _ C M B _ K D Y _ v i a _ K I M G L A : E y e D i a g r a m at b 3 3 8 . S c o o e _ K N G L A _ L 3 . R u n 1

Q Value: 1 4 . 2 9 5 6 [lin] Q Value: 23.1040BB [dB]

-128-

Appendix 21

Spectral and Eye Diagrams of Colombo - Kandv WDM Network via Matara

1) Input of the Kalutara Main Fiber

• N w _ W D M _ C M B _ K D Y _ y i a _ M A T : p p l i c a | S p e c t r u m a l b 3 9 7 , S p e c ! _ K T J n , R u n 1

1S2 192.2 192.4 192.6 192.0 193 193.2

2) Output of the Kalutara Main Fiber

N w _ W D M _ C M B _ K D Y _ v i a _ M A T : O p t i c a l S p e c t r u m a ! b B 9 . S o e c t _ K T _ O u t . R u n 1

d i ( m U / T H . I

i

•

I 1 i

| I I ; V i

V \ i J .A

.WrfW/̂ i X 192 19 Z.Z 192.4 192.6 192.ft 193 193 . 2

r c « a u * n c v I T H i )

-129-

. [ppendix 21

3) Input of the Galle Main Fiber

• N w _ W D M _ C M B _ K D Y _ v i a _ M A T o p t i c a l S p e : t n j m at OKI, S p e c t _ G i j n , R u n 1

dB [mU'TWil

i

I I I I i ! I

\ J j V { . J j Ii [1 i9t 19:.: 19:.« i s : . I i 9 i . • 193 193.2

4) Output of the Galle Main Fiber

19Z 192.2 192.4 192.1 192.0 193 19) . 2

f[*T4«i.'-y [TH»]

-130-

Appendix 21

5 ) Input of the Matara Main Fiber

• N w _ v y p M _ C M B _ K D Y _ v i a _ M A T : O p t i c a ) S p e c t r u m at b 4 1 4 , S p e c t _ M A T _ l n . R u n 1

dB E I K W T H B ]

192 19Z.Z 192.4 191.6 192.0 193 193.2

f r e q u e n c y I T H B ]

6) Output of the Matara Main Fiber

Nw_WDM_CMB_KDY_via_MAT: O p t i c a l S p e c t r u m at b t H , S p e c ! _ M A T _ O u t , R u n 1

dB ImlO/THi ] 40 •

192 192.2 192.4 192.6 192.0 193 193.2

f r e q u e n c y [ T H a }

- 1 3 1 -

Appendix 21

7) Dropped wavelength (X%) at Kalutara

• N w _ W D M _ C M B _ K D Y _ v i a _ M A T : O p t i c a l S p e c t r u m at b 6 , S p e c L K T _ L 8 _ R X , R u r M

192 192.2 192.4 192.5 192.0 193 193.2

F r e q u e n c y (THoJ

8) Added wavelength (k%) at Kalutara

Nw_W0M_CMB_KDY_via_M AT: Optica! Spectrum at b121, Spect_KT_L8„Tx, Run 1

d S ( n l V T H o )

to 1 - - ; r • • r i . '

10

-50

192 192.2 192.1 192.6 192.0 193 193.2

F r e q u e n c y [ T K s ]

- 1 3 2 -

Appendix 21

9) Dropped wavelength (/V?) at Kalutara

N w _ W D M _ C M B _ K D Y _ v i a _ M A T : O p t i c a l S p e c t r u m a t b 1 9 1 . s p e c t _ K T _ L 7 _ R x , R u n 1

dB I n l V T K a l

0

-10

-20

-30

-10

j\ \ \

-1

192 192.2 192.4 192.6 192.0 193 193 .2

r c « q u « n c v [ T H s ]

10) Added wavelength (A,7) at Kalutara

N w _ W D M _ C M 9 _ K D Y _ v i a _ M A T O p t i c a l S p e c t r u m at h i 9 2 , s p e c t _ K T J _ 7 J > 1 R u n 1

2 0 • • - ; ; | | -; [ •; •

io • - - ; : \ — - i j- i ;

192 192.2 191.4 192.6 192.0 19 3 193.2

T s t q u e n c y [THm]

-133-

Appendix 21

11) Dropped wavelength (A.g) at Galle

N w _ y y p M _ C M B _ K D Y _ w a _ M A T : O p t i c a l S p e c t r u m at b 1 9 5 , S p 8 C l _ G L _ L B _ R X . R u n 1

192 192.2 192.4 192.6 193 193.2

12) Added wavelength (Xs) at Galle

f t e q u e n c y [ T H s ]

N w _ W D M _ C M B _ K D Y _ y i a _ M A T : O p t i c a l S p e c t r u m at b 1 9 6 , S p e c t _ G L _ L 8 J \ R u n 1

192 192.2 192.4 192.6 193 193.2

F r e q u e n c y [ T H s ]

-134-

Appendix 21

13) Dropped wavelength at Galle N w _ W D M _ C M B _ K D Y _ v i a _ M A T O p t i c a l S p e c t r u m at b 2 0 9 . s p e c l _ G L _ L 6 _ R x . R u n 1

192.? 192.4 192 6 192.8

14) Added wavelength (X(>) at Galle

N w _ W D M _ C M B _ l - D Y _ v i a _ M A T O p t i c a l S p e c t r u m a t b J t O , $ p e c l _ G L _ L 6 _ T x , R u n 1

'•' | |' u-'l

I

I

i i A i \ / i

— j —

t , i;rrr, , ,

JPrippjfn

192.2 192.4 193 193.2

T i c <fucricy [TK>]

-135-

Appendix 21

15) Dropped wavelength (A,5) at Galle

Nw_WDM_CMB_KDY_via_MAT: Optical Spectrum at P320, spect_GL_L5_Rx, Run 1

dB [ n U / T K s }

0

-20

-30

-40

192 192.2 192.4 192.6 192.0 193 193.2

r z e t f u c n c y ( T H i J

16) Added wavelength (X,5) at Galle

Nw_WDM_CMB_KD¥_vla_MAT: Optical Spectrum at b319, sped GL L5 Tx, Run 1

^ , dB [mU/THm]

20 J I t - -Ir

10 '• * \

-40 •

192 192.2 192.4 192.6 192.0 193 193.2

F m t j u e n c y [ T H o l

-136-

Appendix 21

17) Dropped wavelength (A,8) at Matara

N w _ W D M _ c f f i 3 < D Y _ v i 3 _ M A T : O p t i c a l S p e c t r u m at b 2 2 4 , S p e c t _ M A T _ L 8 _ R X , R u n 1

j !

! I i / N I \

192 192.2 192 1 192 6 192 0 1 3 193 2

F r e q u e n c y ITHnJ

18) Added wavelength (A,8) at Matara

• N w _ W D M _ C M B _ K D Y _ v i a _ M A T : O p t i c a l S p e c t r u m at P 2 2 5 , S p e c t _ M A T _ L B _ T x . R u n 1

dB l » U / T H > ]

20 - '> r - j J " \ J

10 - - I ; r -! r i I

-30

192 192.2 192.4 192.5 192. 5 193 193 . 2

-137-

f r e q u e n c y [ T H « J

Appendix 21

19) Dropped wavelength (X 4 ) at Matara

• N w _ W D M _ C M B _ K D Y _ v i a _ M A T : O p t i c a l S p e c t r u m at P 2 3 8 , s p e c t _ M A T J _ 4 _ R x , R u n 1

dB InAl/THm]

10

-JO -I--. ;, 1 »• J !

192 192.2 192.4 192.6 192.6 193 193.2

Tz•qucncy [ T H s ]

20) Added wavelength (k4) at Matara • N w _ W D M _ C M B _ K D Y _ v i a _ M A T : O p t i c a l S p e c t r u m a t b 2 3 9 , spect „MAT_L4 J \ R u n 1

dB [mlil/THM

20

10

-40

192 192 .2 192.4 192.6 192.0 193 193 . 2

T x e q u c n c y ( T H i ]

-138-

Appendix 21

21) Dropped wavelength (k3) at Matara

• Nw_WDM_CMB_KDY_via_MA7: Optical Spectrum at P337, spect„MAT_L3_Rn, Run 1

191 192. 2 192.4 192.fi 192.0 193 193.2

f r e q u e n c y ITH« ]

22) Added wavelength (X3) at Matara

• Nw_WDM_CMB_KDY_via_MAT; Optical Spectrum at b33B. spect_.MAT_L3_.Tx, Run 1

192 192.2 192.4 192.fi 192.0 193 193.2

f r e q u e n c y [ T H i ]

-139-

Appendix 21

23) Eye Diagram of Xs at Kalutara Branch Station

— N w _ W D M _ C M B _ K D Y _ v i a _ M A T : Eye D i a g r a m at ta1 4 2 , S c o p e _ K T _ L 8 , R u n 1

1 Value: 4 8 . 6 1 8 3 [lin] Q Va lue: 3 3 , 7 7 1 6 5 4 [dB]

24) Eye Diagram of Xj at Kalutara Branch Station

N w _ W D M _ C M B _ K D Y _ v i a _ M A T : Eye D i a g r a m at b1 6 4 , S c o p B _ K T _ L 7 , R u n 1

-140-

Appendix 21

25) Eye Diagram of X.x at Galle Branch Station

— N w _ W U M _ C M B _ K D Y _ v i a _ M A 1 L y e D i a g r a m a l b 1 9 9 . S c o p e _ G L _ L 8 . R u n 1

0 001 s

T I M I n . I

- u - I

Q V a l u e 2 1 4 5 9 2 [ I m ] Q V a l u e ?r, G 3 2 2 G G [dB]

26) Eye Diagram of X(, at Galle Branch Station

| — N w _ W D M _ C M B _ K D Y _ v i a _ M A T E y e D i a g r a m a l b 2 0 8 . S c o p e _ G L _ L 6 . R u n 1

0 O O 1 3

0 0 0 0 3 -

•u- i i a Value 24 2011 [lin] Q Value 27 !

0 06114^9 In K'ecrior, I h c e ! « • « Ti,ffli:i=!=,sH.grrHrtm

-141-

Appendix 21

27) Eye Diagram of Xs at Galle Branch Station

— N w _ W D M _ C M D _ K D Y _ v i a _ M A T E y e D i a g r a m at D 3 2 1 . S c o p e _ G L _ L 5 . R u n 1

0 . oonis

o.ooor J

T »»• I r>« ]

Q Value 23 834 [lin| • Value: 27 5 4 3 9 2 2 (dB) U 0737141! Ins] C'eciciori T h r e h o l d (O

28) Eye Diagram of X* at Matara Branch Station

— N w _ W D M _ C M B _ K D Y _ v i a _ M A T E y e D i a g r a m a l b 2 2 8 , S c o p e _ M A T _ L B R u n 1

U Value III 7MI4 [lm| I] VAIUP 25 75702B |dB I

- 1 4 2 -

Appendix 21

29) Eye Diagram of A.4 at Matara Branch Station

— N w _ W D M _ C M B _ K D Y _ v i a _ M A T E y e D i a g r a m a t b 2 3 7 . S c o p e _ M A T _ L 4 , R u n 1

30) Eye Diagram of Xj at Matara Branch Station

— N w _ W D M _ C M H _ K D Y _ v i a _ M A T E y e D i a g r a m at b 3 3 8 . S c o p e _ M A T _ L 3 , Run 1

r

0 . 0 0 2 4

O . 0 0 1 7 3

O . O O l t S

0 . 0 0 0 7 5

0 . 0 0 0 2 S

0 . 0 5 0 . 0 7 5

I IJ V a l u e 1 8 343 [In] Q V a l u e 25 26841 3 [dB]

T i m e l O o t h 0 . 0 4 9 1 4 2 9 [ m l D e c i s i o n T U e o h o l d 1 0

•143-

I K v 7 A P R .

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