A PRESENTATION ON PRACTICAL TRAINING TAKEN AT BSNL, CHITTORGARH www.powerpointpresentationon.blogspot.com.

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A PRESENTATION ON PRACTICAL TRAINING TAKEN AT BSNL, CHITTORGARH

AN INTRODUCTION TO BSNL An Autonomous Enterprises of Indian Government. Largest telecommunication Company in India and Seventh Largest in world. It provides a wide communication network which is reachable to all over country. It is equipped with the Latest technology such as:- CDMA, TDMA, GSM.

AREA EXCHANGE ROOM SWITCH ROOM - OFC ROOM - CARD ROOM MAIN FRAME DISTRIBUTION ROOM

ROOMS :- POWER ROOM Power is supplied to OFC Room, Switch room and MDF room. ENGINE ROOM

OPTICAL FIBRE CABLES Why we use OPTICAL FIBRE Cable ? - Size,weight and Flexibility Electrical isolation Security Low transmission loss More information carrying capacity Low cost

BASIC STRUCTURE

TYPES OF OPTICAL FIBRE CABLES:- BASED ON THE NO. OF MODES BASED ON REFRACTIV E INDEX MONO MODE MULTI MODE STEP INDEX GRADED INDEX

How Communication Take Place in OFC ?

PROCESS OF COMMUNICATION via OFC Transmitter Receiver Message origin Modulator Carrier Source Message output Signal processor Detector Channel Coupler Information Channel Channel Coupler ( input ) ( output )

FAULTS THAT MAY OCCUR Fault in wires Fault in cards Fault in computer Fault in subscriber’s end

COMPONENTSA/BA/EB/E AC0.0 DC0.0 R1.00m  C3.03  F HOW TO DETECT A FAULT ? Standard Table Of Various Components

MULTIPLEXERS Processing of Signal by using MULTIPLEXER