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Telecommunication Networks

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What is Telecom ?

Telecommunication is the assisted

transmission of signals over a distance for thepurpose of communication.

It is the technology of transferring information

over a distance.

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Benefits of Telecom Expansion of spatial & temporal horizons.

New industries are possible like BPO. New facilities like

tele-medicine, tele-education,

e-governance,

e-commerce

Leads to economic growth.

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Telecom in India

Growing subscriber base.

New services and technologies. More focus on wireless & internet.

Government wants more development inrural areas.

Decreasing Prices.

Increasing demand for bandwidth. Guided by New Telecom Policy 1999 &

National Telecom Policy 1994.

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Thrust areas in Telecom

Customer premises equipment.

Access

Network

Transmission

Switching

Computerization

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Learning Objectives

Identify major developments and trends in

Telecom N/W in India Identify the basic components, & functions, of

various N/W elements.

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The current Generation Networki. Access N/W

ii. Aggregation N/W

iii. Backbone

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Communication Fixed

Lines

Telephone Exchanges

SubscriberLine(2W)

Inter-ExchangeJunction

SubscriberLine(2W)

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Communication - Mobile

TelephoneExchange

SubscriberLine(2W)

Inter-ExchangeJunction

Mobile Switching

Centre (MSC)

BSC BTS

MS

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Rajiv Gandhi Memorial Telecom Training CenterSub Access Network

MDF

Primary

CABINET

PILLARS

Secondary

Distribution

DP

Drop wire

DP

DP

DP

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Rajiv Gandhi Memorial Telecom Training CenterThe current Generation

Network.. Circuit switching based

Suitable for voice

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Communication - Mobile

TelephoneExchange

SubscriberLine

(2W)

Inter-ExchangeJunction

Mobile SwitchingCentre (MSC)

BSC BTSMS

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Rajiv Gandhi Memorial Telecom Training CenterProject 2.2 : A City

Tier 2 LAN Switch

ADSL

terminals

FEGE

ADSL

terminals

..DSLAM.. X-ge B

X-ge C

ADSL

terminals

FEGE

ADSL

terminals

..DSLAM..X-ge D

X-ge E

ADSL

terminals

FEGE

..DSLAM..

Tier1 GigE

Aggregation

SW

GigE

BB

Broadband

RASGigE

Core

router

E

thernet

onda

rkfibr

e

ADSL

terminals

..DSLAM..

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N/W Hierarchy

LevI TAX Lev I TAX

LevII TAX

TANDEM/LE

LevII TAX

TANDEM/LE

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MidasMidas

W ireles s A cc es s Netw ork

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Rajiv Gandhi Memorial Telecom Training CenterNETWORK DIAGRAM OF CDMA / WLL

SYSTEM

PSTNBSC

( V5.2 OR

R2/NO.7 )

BTS

FAX

FWT

2 MbpsDIGITALLINK

..

MS

2 MbpsDIGITAL

LINK2 MbpsDIGITALLINK

Telecom

Network

BTS

BSC : Base Station Controller

MSC : Mobile Switching CentreFWT : Fixed Wireless Terminal at subscriber premises.

MS : Mobile Station

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DATA N/W

Access

DSLAM

TIER II SW

TIER I SWNIB

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NGN-

convergence of N/W Packet switching based

IPV6

Portability

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The medium

OFC Backbone & access

DWDM systems PON

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BSNL SERVICES

Landline Services.

Mobile Services. Internet Services.

Intelligent Services Data Communication Services.

Satellite Services Other Services

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LANDLINE SERVICES

1. Basic Phone

2. ISDN3. CENTREX

4. EPABX5. PCO / Coin-Box

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MOBILE SERVICES

6. Mobile

7. WLL8. GPRS/EDGE/3G

R ji G dhi M i l T l T i i C t

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INTERNET SERVICES

9. Dial Up.

10. CLI based.11. Sancharnet.

12. ISDN Sancharnet13. High speed internet over WLL

14. DIAS15. BROADBAND

R ji G dhi M i l T l T i i C t

S C S

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Rajiv Gandhi Memorial Telecom Training CenterINTERNET SERVICES

16. Ev-DO

17. NIC Card18. Wi-Fi

19. Wi-MAX20. Internet over Mobile (GPRS/EDGE/3G)

21. Web Hosting22. Web Co-Location

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INTELLIGENT SERVICES

23. India Telephone Card

24. FLPP25. Tele voting

26. Universal Access Number27. Universal Personal Number

28. Premium Rate Services

29. Free Phone

30. VPN

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DATA COMMUNICATION

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Rajiv Gandhi Memorial Telecom Training CenterDATA COMMUNICATION

SERVICES

31. Leased Line

32. Internet Over Leased Line33. MLLN

34. MPLS-VPN35. VPNoBB

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OTHER SEVICES

39. Fleet Tracking

40. IP-TV / Multiplay41. Video/Audio/Web Conferencing

42. Telegraph

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TodaySeparate Service Networks

IPNetworks

PLMN

PSTN/ISD

N

Services

Separate Access Transport & Switching Networks

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PSTN model Vs NGN model

Voice

Network

IP

Network

Video

Network

Storage

NetworkIP

Network (for Voice, Data & Video)

Dedicated Network per service

Large Invest

Multiple technologies / Knowledge

Convergence technologies

Cost reduction

One Protocol, one Knowledge

Video voice Data Video StorageStorageVoice Data

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PSTN model Vs NGN model

Voice

Network

IP

Network

Video

Network

Storage

NetworkIP

Network (for Voice, Data & Video)

Dedicated Network per service

Large Invest

Multiple technologies / Knowledge

Convergence technologies

Cost reduction

One Protocol, one Knowledge

Video voice Data Video StorageStorageVoice Data

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Transition to NGN: Third wave

One network for everything

Today Tomorrow

Telephonenetwork

Mobile radio

network

IP-Network

Multimedia Access - Advantage

easy to handle

reliable

mobile

Internet

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The future NGN one N/W all services

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