Telecommunication Networks
What is Telecom ?
Telecommunication is the assisted transmission of signals over a distance for the purpose of communication. It is the technology of transferring information over a distance.
Rajiv Gandhi Memorial Telecom Training Center
Rajiv Gandhi Memorial Telecom Training Center
Information
1. Information can be of several type:
Audio Telephone Text - Telegraph , email, SMS Pictures Picture attachments Video Clipping over internet Data ATM to bank.
2. The same telecom technology/service cannot communicate all the types of information.
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
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Leads to economic growth.
Telecom in India
Growing subscriber base. New services and technologies. More focus on wireless & internet. Government wants more development in rural 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
Rajiv Gandhi Memorial Telecom Training Center
Rajiv Gandhi Memorial Telecom Training Center
Learning Objectives
Identify major developments and trends in Telecom N/W in India Identify the basic components, & functions, of various N/W elements.
The current Generation Network i. Access N/W ii. Aggregation N/W iii. Backbone
Rajiv Gandhi Memorial Telecom Training Center
Communication Fixed Lines
Subscriber Line (2W) Inter-Exchange Junction Subscriber Line (2W)
Telephone Exchanges
Communication - Mobile
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Subscriber Line (2W)
Inter-Exchange Junction
BSC
BTS MS
Telephone Exchange
Mobile Switching Centre (MSC)
Sub Access Network
Rajiv Gandhi Memorial Telecom Training Center
Drop wire
DP CABINET PILLARS DP
DP
MDF
Primary Secondary
DP
Distribution
The current Generation Rajiv Gandhi Memorial Telecom Training Center Network..
Circuit switching based Suitable for voice
Rajiv Gandhi Memorial Telecom Training Center
Communication - Mobile
Subscriber Line (2W)
Inter-Exchange Junction
BSC BTS
Telephone Exchange Mobile Switching Centre (MSC)
MS
Rajiv Gandhi Memorial Telecom Training Center Project 2.2 : ACore City
router
Broadband RAS GigE
BB Tier1 GigE Aggregation SW
..DSLAM.. ADSL terminals
et n r e Eth
on
e ibr f k dar
GigE
Tier 2 LAN Switch
GE
..DSLAM..
FE
X-ge C X-ge B
GE
..DSLAM..
FE
X-ge D
X-ge E
GE
..DSLAM..
FE
ADSL terminals
ADSL terminals
ADSL terminals
ADSL terminals
ADSL terminals
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N/W Hierarchy
LevI TAX
Lev I TAX
LevII TAX LevII TAX
TANDEM/LE TANDEM/LE
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W ireless A ccess N etw ork
M id as
Rajiv GandhiDIAGRAM Memorial Telecom Training Center NETWORK OF CDMA / WLL SYSTEM
2 Mbps 2 Mbps
DIGITAL LINK DIGITAL 2 Mbps LINK DIGITAL LINK
BTS
FWT
FAX
Telecom Network
PSTN
BSC ( V5.2 OR R2/NO.7 )
..
MS
BTS
BSC : Base Station Controller MSC : Mobile Switching Centre
FWT : Fixed Wireless Terminal at subscriber premises. MS : Mobile Station
Rajiv Gandhi Memorial Telecom Training Center
DATA N/W
Access DSLAM TIER II SW TIER I SW NIB
Rajiv Gandhi Memorial Telecom Training Center
Mobile N/W
GSM/CDMA MS BTS BSC MSC
Rajiv Gandhi Memorial Telecom Training Center
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
LANDLINE SERVICES
1. 2. 3. 4. 5. Basic Phone ISDN CENTREX EPABX PCO / Coin-Box
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MOBILE SERVICES
6. Mobile 7. WLL 8. GPRS/EDGE/3G
Rajiv Gandhi Memorial Telecom Training Center
INTERNET SERVICES
9. Dial Up. 10. CLI based. 11. Sancharnet. 12. ISDN Sancharnet 13. High speed internet over WLL 14. DIAS 15. BROADBAND
Rajiv Gandhi Memorial Telecom Training Center
INTERNET SERVICES
16. Ev-DO 17. NIC Card 18. Wi-Fi 19. Wi-MAX 20. Internet over Mobile (GPRS/EDGE/3G) 21. Web Hosting 22. Web Co-Location
Rajiv Gandhi Memorial Telecom Training Center
INTELLIGENT SERVICES
23. India Telephone Card 24. FLPP 25. Tele voting 26. Universal Access Number 27. Universal Personal Number 28. Premium Rate Services 29. Free Phone 30. VPN
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DATA COMMUNICATION Rajiv Gandhi Memorial Telecom Training Center SERVICES
31. Leased Line 32. Internet Over Leased Line 33. MLLN 34. MPLS-VPN 35. VPNoBB
Rajiv Gandhi Memorial Telecom Training Center
OTHER SEVICES
39. Fleet Tracking 40. IP-TV / Multiplay 41. Video/Audio/Web Conferencing 42. Telegraph
Today
Separate Service Networks
Services
Separate Access Transport & Switching Networks
IP Networks
PSTN/ISDN
PLMN
PSTN model Vs NGN model
Dedicated Network per service Convergence technologies
Rajiv Gandhi Memorial Telecom Training Center
Large Invest Multiple technologies / Knowledge
Cost reduction One Protocol, one Knowledge
Voice
Data
Video
Storage
voice
Data
Video
Storage
Voice Network
IP Network
Video Network
Storage Network
IP Network (for Voice, Data & Video)
PSTN model Vs NGN model
Dedicated Network per service
Rajiv Gandhi Memorial Telecom Training Center
Convergence technologies
Large Invest Multiple technologies / Knowledge
Cost reduction One Protocol, one Knowledge
Voice
Data
Video
Storage
voice
Data
Video
Storage
Voice Network
IP Network
Video Network
Storage Network
IP Network (for Voice, Data & Video)
Rajiv Gandhi Memorial Telecom Training Center
Transition to NGN: Third wave
Today Tomorrow
Internet
Telephone network
IP-Network
Mobile radio network
Multimedia Access - Advantages easy to handle reliable mobile
One network for everything
Rajiv Gandhi Memorial Telecom Training Center
The future
NGN one N/W all services
Rajiv Gandhi Memorial Telecom Training Center
