About Gailtel a Department of GAIL India

1. By-
VAIBHAV JINDAL
07/N/275
EC-6

2. GAILTEL Presentation
Table of Contents
• Introduction
• Role of Telecom in GAIL
• Communication System In GAIL,PATA

4. GAIL AS A MARKETING

6. Basic of Telecom System / Network
Communication means transporting
information (Voice / Data / Video) from one
point to other.
Transmitter Receiver
Source Destination
Output
Transmission System
Transmission Media

7. Communication System
Duplex Communication Link
Location
B
RX
TX
Voice
Voice
Data
Data
Video
Video
Channel (carries Information) Link
Any Communication System can be characterized by :
• Source : Transmit Point (TX)
• Destination : Receive Point (RX)
• Communication Medium : Copper, Co-axial, MW, Satellite, Optical
• Information Transfer Capacity : function (Channel, Link) = Bandwidth
• Traffic : Flow of Information from one location to other

8. Basics of Telecom System / Network
Comparative Study of CoxialCable and
OFCable
Characteristics Coaxial OFC
1. Right of way Required Required
2. Bandwidth Limited Very High
3. Expansion /
Scalability
Medium Excellent
4. Immunity to
Interference
Prone Quite immune to
interferences

9. VSAT Network
HBJ Network
GREP Network
JLPL Network
MCPC Network
Sub Network-1 Sub Network -2
Sub Network-3
Sub Network -4
Sub Network -5
GAILnet
(GAIL’s own dedicated integrated communication network)
Sub Network-7
Sub Network-6
DVPL Network
GAILTEL Network
VSPL Network
Sub Network-8

10. GAILTEL Phase-I Network
Network Length: 1650 km
Delhi
Baroda
Mumbai
Vijaipur
Jaipur
Jamnagar Ahmedabad
Jodhpur
Udaipur
Rajkot
Kandla
Loni
Palanpur
JLPL Network
Phase-I Network
Bareilly
Agra
Gwalior
Madhya Pradesh
Uttar Pradesh
Maharastra
Rajasthan
Gujarat
Surat
Meerut
Mathura

11. Phase 1 Network
 Deployed in 2002, spans over 1650 Km, extends from
Bareilly to Vijaipur via Delhi and from Palanpur to
Mumbai via Baroda
 It also provides the connectivity to major cities like:
Ahmadabad, Baroda, Surat, Jaipur, Udaipur, Jodhpur,
Agra, Meerut.
 In this network SDH & DWDM equipment of M/s Nortel
have been deployed.
 The equipped capacity of Phase-I network is 2.5 Gbps.

12. Phase-I+ JLPL Network
Phase-IIA Network
Delhi
Baroda
Mumbai
Vijaipur
Lucknow
Jamnagar
Ahmedabad
Chandigarh
Bhopal
Kanpur
Indore
Jodhpur
Udaipur
Rajkot
Kandla
Khera
Hazira
Nasik
Jaipur
Loni
Surat
Palanpur
Bareilly
Agra
Gwalior
Madhya Pradesh
Uttar Pradesh
Maharastra
Rajasthan
Gujarat
Meerut
Mathura
GAILTEL Phase-IIA Network
Network Length: 1700 Km

13. Phase 2A Network
 Deployed in 2003-04 and spans over 1700 Km.
 It consists of Links:
a) from Baroda to Mumbai as a redundant link,
b) from Bareilly to Kanpur,
c) from Delhi to Chandigarh
d) DVPL link from Vijapur to Dahej
 It also provides connectivity to major cities like:
Lucknow, Bhopal, Indore, Nasik, Thane, Ambala, Karnal
& Panipat
 In this network SDH & DWDM equipment of M/s Nortel
have been deployed.
 The equipped capacity of Phase-IIA network is 2.5 Gbps

14. Delhi
Baroda
Mumbai
Vijaipur
Lucknow
Jamnagar
Ahmedabad
Chandigarh
Bhopal
Kanpur
Indore
Jodhpur
Udaipur
Rajkot
Kandla
Khera
Hazira
Nasik
Jaipur
Loni
Surat
Palanpur
Bareilly
Agra
Gwalior
Madhya Pradesh
Uttar Pradesh
Maharastra
Rajasthan
Gujarat
Meerut
Hyderabad
Vizag
Pune
Vijayawada
Auraiya
Pata
Rae-Bareilly
Badauin
Aligarh
Karnataka
Phase-IIB Network
GAILTEL Phase-IIB Network
Network Length: 1900 Km
Phase-I+IIA+ JLPL Network

15. Phase 2B Network
 Deployed in 2003-04 and spans over 1800 Km.
 It consists of Links:
a) from Kanpur to Vijaipur,
b) from Pune to Hyderabad,
c) VSPL link from Hyderabad to Vizag
 It also provides connectivity to major cities like: Auraiya,
Pata, Jhansi, Rae-Bareilly, Aligarh, Solapur, Sangareddy,
Secunderabad, Vijayawada, Rajahmundry
 In this network SDH & DWDM equipment of M/s Fibcom
have been deployed.
 The equipped capacity of Phase-IIB network is 2.5 Gbps.

16. MAJOR COSTOMERS OF GAILTEL

17. GAILTEL Business
 Bandwidth Sale : 3700 Mbps
 Annualized Revenue : Rs. 24 Crore

19. Communication in GAIL PATA PLANT is
achieved by following ways:
 EPABX
 PA SYSTEMS
 RADIO PAGING SYSTEM
 WALKI TALKI/VHF based System
 PSTN/Wll/GSM
 SCADA SYSTEMS
 OFC Backbone (SDN STM1O)

20. Exc.
ss1
30XXX
31XXX
33XXX
34XXX
9XXX
32XXX
35XXX
Exc.
Qc
Lab.
Exc.
Down
stream
Exc.
SB1
Main
Exc.
SS4
EPABX
EPABX#1
EPABX#2
Town
ship
Town
ship
Back Bone
Modem
Modem Modem
Modem
Modem
Modem
Modem
Modem
Modem
STM 16
LIM
ABS
S/HDSL
(2 Mbps)
(2 Mbps)
Exchange
Connectivity
In
GAIL (PATA)
30 Channel
Ss 4
SB1
Down
Stream
Modem
Modem
30 Chanel
SS1
Town Ship
QC
Lab.
EPABX
EPABX
Modem
Modem
SS4

21. GAIL
TOWN
SHIP
EXCHA
NGE
GAIL
PLANT
EXCHA
NGE
(SS4)
TMUX
PMUX
ADM
R.R. R.R.
DCC
34 Mbps (E3)
Tributary Side
16*2Mbps
(E1)
Back Bone
2 Wire Copper
Router Interface
RS232/ V.35
2 Wire Copper
Router Interface
R232 or V.35
5 K.M.
Connectivity Plant to Town
Through Backbone
ADM
ADM: Add Drop Multiplexer
RR: Repeater & Regenerator
TMUX: Tributary Multiplexer

22. Telephone
RJ11 Socket
Rosette
Box
Drop Wire
2/4 Pair
DB
Junction
Box
Feeder
Cable
Field
(MDF)
Exchange
(MDF)
Exchange
Jumper Wire
Connection of Exchange to Telephone
MDF: Main Distribution Frame
DB: Distribution Box

23. 0 1 2
0 1 2 3 4 5
Exchange No. 001
Module
No.0
Module
No.1
Module
No.2
Module
No.3
Sub
Modules
0 1 2 3
0 1 2
0 1
0 1 2
0 1
2
0 1 3
0 1 2
0 1 3
2
0 1 4
3
2
0 1
0 1 2
0 1 3
2
0 1 4
3
2
0 1
0 1 2
0 1 3
2
0 1 2
0 1 3
2
0 4
3
2 5
4
3
2
0 1
Line Cards
Power
Card
(PU4DC)
Flash Card
No. Planning for EPABX
0
0
1
0
To
3
0
To
5
1
To
16
Ex.
No.
Mo
dule
No.
Sub
Mo
dule
Ckt
No

24. PDH (Plesiochronous Digital Hierarchy)
• Plesiochronous is a Greek word meaning Almost
Synchronous , but not fully synchronous.
• In Plesiochronous system every equipment is
generating its own clock for synchronization.

25. Digitisation Process
Telephony signals:
• 4 Khz Voice signal is sampled at twice the frequency-
8000 Hz
• Samples are Quantized- Benchmarked to nearest
predefined levels
• Quantized samples are encoded using 8 binary bits
• Each Voice channel hence occupies
8x8000 = 64000 Bits per Second = 64 Kbps
00000001
00000010
00000011
.
.
.
.

26. Multiplexing Hierarchy
PDH (D1 Level )(PCM 30 Mux )
32 * 64 KHz = 2.048 Mb/s
Capacity = 30 Base Channels
PDH (D2 Level )
4 * 2.048 +stuffing bits = 8.448 Mbps
Capacity = 120 Base Channels
PDH (D3 Level )
4 * 8.448 + stuffing bits = 34.368 Mbps
Capacity = 480 Base Channels
PDH (D4 Level )
4 * 34.368 +stuffing bits = 139.264 Mbps
Capacity = 1920 Base Channels

27. Limitations
 There is insufficient provision for network management with
in the PDH frame format for them to be able to do this.
 No standard for synchronization
 Standard equipment from different vendors are not compatible
 Increase in number of equipments required.
 There's no standardized definition of PDH bit rates greater than
140 Mbit/s

28. SDH (Synchronous Digital Hierarchy )

29. SDH Equipment
Terminal Multiplexer
• Path Termination equipment which acts as
concentrator of tributary signals like E1
Regenerator
• Regenerator is used to boost the signals
between multiplexers placed across a long
distance
Add-Drop Multiplexer
•Add Drop Multiplexer is used to access the signals to be
dropped or inserted while allowing the other signals to
flow through without processing
STM-4
E 1
E 3
T 1
Path Termination
Equipment
Path Termination
Equipment
Regenerator
STM-4
STM- 4
STM- 4 STM- 4

30. SDH- Network Topologies
 Point to Point
• Involves two terminal multiplexers
connected together with an optical
fiber with or without regenerators
 Point to Multipoint
• This configuration necessarily
involves a Add Drop Multiplexer
which connects to multiple sites
adding or dropping signals at
each site
PTE Regenerator PTE
PTE
Regenerator
ADM PTE
Regenerator

31. SDH- Network Topologies
MUX
Regenerator
DCS
Regenerator
Regenerator
MUX
MUX
MUX
Regenerator
 Hub Configuration
• Hub configuration involves a Digital Cross Connect
System at the centre of a mesh network, grooming the
traffic from various directions.
 Ring Configuration
• Ring configuration involves multiple ADMs connected
along the optical fiber ring either in bi-directional or
Uni-Directional connectivity.
ADM
ADM ADM
ADM

32. STM-N Process
DS1 (1544 Kbps)
E1 (2048 Kbps)
DS2 (6312 Kbps)
E3 (34368 Kbps)
DS3 (44736 Kbps)
E4 (139264 Kbps)