BHARAT SANCHAR NIGAM LIMITED
#1

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INDUSTRIAL TRAINING PRESENTATION
CONTENT

Certificate
Introduction
Exchange
Exchange Layout
Main sections of exchange
MDF
Power plant
Switching room
GSM
GSM Architecture
Basic Building Blocks
Media
INTRODUCTION ABOUT ORGANISATION
Today, BSNL is the No. 1 telecommunication company and the largest public sector undertaking of India and its responsibilities includes improvement of the already impeccable quality of telecom services, expansion of telecom services in all villages and instilling confidence among its customers.
EXCHANGE
Equipment which effects interconnection of telephones is known as switching equipment.
The switching centre, which houses the terminating and switching equipment is called telephone exchange.
EXCHANGE LAYOUT
Typical exchange consist of :
Switch Room
Operations and Maintenance (OMC) Room
Input Output processor (IOP) Room
Power Plant Room
Battery Room
Main Distribution Frame (MDF) Room
MAIN SECTIONS OF EXCHANGE:
Main Distribution Frame (M.D.F) : INTRODUCTION:
The main parts of the power room are: 1. Batteries 2. UPS (Uninterrupted Power Supply) 3. Charging - Discharging Unit 4. Inverter and Converter Unit
GSM : (SYSTEM ARCHITECHTURE)
This system structured hierarchically as shown:
It consist of one administrative region, which is assigned to a MSC(Mobile Switching Center).
Each administrative Region is made up of atleast one Location Area(LA). LA is also called the visited area.
An LA consists of several cell groups.
Each cell group is assigned to a base station controller(BSC).
Cells of one BSC may belong to different LA’s.
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#2

BHARAT SANCHAR NIGAM LIMITED

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. PREAMBLE
1.1 For and on behalf of CMD, BSNL, New Delhi, the General Manager, BSNL, Thanjavur invites sealed Tenders with Wax / PVC tape sealing who are having at least one year experience in BSNL for Providing Man power assistance on works contract basis to BSNL Staff for U/G cable joint maintenance works in Thanjavur SSA for the year 2011-12. The works have to be carried out in exchange areas under the jurisdiction of General Manager BSNL, Thanjavur SSA for the year 2011-12.

2. SCOPE OF WORK
2.1 Thanjavur SSA is divided into the following two (2) Zones for the purpose of cable joint maintenance works. The tender is valid for one year from the date of signing the agreement.


Zone
Area falling under the control of
1 DE (EXTL)/THANJAVUR-ESI covered area and
DE (RM )/THANJAVUR
DE (RM )/PAPANASAM-ESI uncovered areas
2 DE(RM)/PATTUKKOTTAI DE(RM)/MANNARGUDI
DE(RM)/TIRUVARUR DE(RM)/TIRUTHURAIPOONDI-ESI uncovered areas

2.2 The Tenderers submitting bid for the work should have sufficient Man powers on hand and should be able to deploy them to assist the cable jointers / TMs immediately on daily basis to all unit officers i.e JTO/SDE concerned. No tools will be supplied by the BSNL for excavating of pits and reinstatement. The unit officers will supply materials like Cables and Jointing Kits required for cable Jointing/Mtce., work. Supply of all consumable materials for the purpose of cable joint like cotton waste, kerosene, sleeve etc is the responsibility of the unit officer concerned. Cable tent is also to be constructed if required at the contractor’s own cost.

3. How to get the Tender form / schedule
3.1 Separate Tender schedule are to be obtained for each zone and submitted zone-wise. The cost of tender form is Rs 520/- inclusive of tax and is non–refundable. The amount is to be paid at the cash counter of the office of the General Manager, BSNL, Balaji Nagar Complex, Thanjavur -7 between 1000 hrs and 1300hrs on all working days. Tender forms containing details along with schedule can be obtained from Asst. General Manager(CFA), O/o General Manager, BSNL, Balaji Nagar Complex, Thanjavur -7 on production of receipt towards the payment of the cost of the tender document between 10.00 hrs and 17.00 hrs on all working days. The tender cost can be paid by means of crossed DD/Banker’s cheque also issued by any scheduled bank in favour of Accounts officer [Cash], BSNL, Thanjvaur payable at Thanjavur. If Tender document downloaded from BSNL website, the cost of tender document should be paid by crossed DD issued by any scheduled bank payable at Thanjavur at the along with the tender document at the time of submission. The bidder shall bear all costs associated with preparation and submission of the bid. BSNL in no case shall be responsible for these costs regardless of the conduct or outcome of the bidding process.
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