Bsnl Inplant Training

IMPLANT TRAINING REPORT REPORT ON BASIC TELECOM TECHNOLOGIES TRAINING SITE:

District Telecom Training centre, BSNL, Chennai Telephones, No.9,M.E.S.Road,East No.9,M.E.S.Road,East Tambaram, Chennai-59.

TRANING PERIOD:

04-06-2012 TO 08-06-2012

SUBMITTED BY NAME:XXXX. ROLL NUMBER:

XXXX

REG. NUMBER: XXXX

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ACKNOWLEDGEMENT:

I would like to acknowledge and extend my heartfelt gratitude to the people who have made made the completion completion of my training possible. possible. I am highly indebted to BSNL, Chennai Telephones for their guidance and constant supervision as well as for providing necessary information regarding the training & also for their support in completing the training. I would like to express my gratitude towards my parents & member of BSNL

,Chennai

telephones

for

their

kind

co-operation

and

encouragement which help me in completion of this training. I would like to express my special gratitude and thanks to industry persons for giving me such attention and time.





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Basic telecom technology 1. Power ac 2. Underground cables

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Datacom

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Dense Wavelength Division Multiplexing(DWDM)

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Fundamentals of switching

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Fundamentals of transmission

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GSM

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Mobile communication

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Newer technologies 1. Internet 2. firewall 3. DNS 4. WINDOWS XP dialup networking

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Wireless broadband

To learn necessary information on the basic telecom technologies and their applications. : 

The training proved to be very useful as it provided a vast range of information regarding the newer technologies like proxy servers,Dialup networking,modem networking,modem and firewall. Signal encoding techniques like NRZ and RZ coding were taught.





: POWER AC:

An air-conditioning system which enables the conditions inside to be maintained can be explained as a series of cycles:1. The Refrigeration Cycle. 2. The Air cycle. 3. The cooling water cycle.

UNDERGROUND CABLES:

::

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All the insulated conductors compactly arranged in pairs, units and super units constitute core of the cable :

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As the presence presence of moisture deteriorate the quality of insulation of the telecom cables, moisture barrier protects entry moisture into the core of the cable. ::

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Telecom cables require Protection o

from probable mechanical damages

o

from water and chemicals or soil conditions





DATACOM:

The objective is to familiarize with : i)

Concept of data communication

ii)

Components of data communication

iii)

Transmission Definitions

iv)

Transmission codes

v)

Nyquist – Shannon sampling theorem – Shannon

vi)

Data Transmission

vii)

Signal encoding

viii)

Modulation Techniques

DWDM:

The emergence of DWDM is one of the most recent and important phenomena in the development of fiber optic transmission technology. Dense wavelength-division multiplexing (DWDM) revolutionized transmission technology by increasing the capacity signal of embedded fiber. The existing SONET/SDH network architecture is best suited for voice traffic rather than today’s high-speed data traffic. To upgrade the system to handle this kind of traffic is very expensive and hence the need for the development of an intelligent all-optical network. Such a network will bring intelligence and scalability to the optical domain by combining the intelligence and functional capability of SONET/SDH, the tremendous bandwidth of DWDM and innovative networking software to spawn a variety of optical transport,





FUNDAMENTALS OF SWITCHING:

When electronic devices were introduced in the switching systems, a new concept of switching evolved as a consequence of their extremely high operating speed compared to their former counter-parts, i.e., the Electromechanical systems, Relays, the logic elements in the electromechanical electromechanical systems, have operate and release times which are roughly equal to the duration of telephone signals to maintain required accuracy. FUNDAMENTALS OF TRANSMISSION:

The study of transmission units has a unique importance for communication engineer who has to maintain and install telecommunication equipments achieving the standards set up by international consultation committees. committees.

In order to control the quality of wanted signal in the presence of many undesired signals, we should be able to specify the amount of wanted and unwanted signals at a point in the telecommunications telecommunications network. GSM:

The GSM Cellular network includes a state of art billing and customer care system supporting several customer friendly features. The Network is identified as local access in the entire licensed service area as against the SDCA based local area. The components of the Mobile Billing have different elements like airtime charges, roaming charges, messaging charges, and value added service charges apart from PSTN charges for inter network traffic.







The emergence of the Third Generation Mobile Technology (Commonly (Commonly known as 3G), has been the latest innovation in the field of communication. communication. Specifically, 3G wireless networks support the following maximum data transfer rates: 

2.05 Mbits/second to stationary devices.

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384 Kbits/ second for slowly moving devices, such as a handset carried by a walking user.

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128 Kbits/second for fast moving devices, such as handset in moving vehicles.

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NEWER TECHNOLOGIES:

Newer technologies include: -internet -proxy servers -windows xp dialup networking -firewall WIRELESS BROADBAND:





Cellular Mobile Telephony (GSM-GPRS,EDGE / CDMA 2000 1x EVDO,EVDV) (3G-UMTS/WCDMA. Summary: 

The first session included details about AC plant engine alternators ,their operation and maintenance.

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The second session provided details on the concepts , components of data communication and modulation techniques.

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The next session provided information on DWDM,which DWDM,which is one of the most recent and important phenomena in the development of fiber optic transmission technology.

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Introduction to electronic exchanges were dealt in fourth session.

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Transmission Units, Line Characteristics, Distortion, Cross Talk, Impedance Matching in Telecom Network and PCM Principles were dealt in the next session.

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Signaling in GSM and GPRS were dealt in the sixth session.

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The next session dealt with basic features of mobile network.

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The next session on the newer technologies like dialiup networking and proxy servers proved to be the most interesting amongst all.

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The last session dealt with wireless broadband technologies technologies and the marketing of services.

Bsnl Inplant Training

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