telecom introduction
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Telecommunication Networks
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Rajiv Gandhi Memorial Telecom Training Center
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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