SYNOPSIS OF 6 MONTH INDUSTRIAL TRAINING(OPERATION AND MENTAINENCE DEPARTMENT)

BACHELOR OF TECHNOLOGY(ELECTRONICS & COMMUNICATION ENGINEERING)

(2007-2011)

SUBMITTED BYTanuj Kohli

UNIV. ROLL NO: 7210406906

BHUTTA COLLEGE OF ENGINEERING &TECHNOLOGY

BHUTTA, LUDHIANA

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ACKNOWLEDGEMENT

I Student of BHUTTA COLLEGE OF ENGG. & TECH. 8th Semester (E.C.E) express

our heartfelt thanks to my Teachers for providing us their valuable guidance & sharp

vision to undertake this industrial training. I also thank Mr. Devindar Singh Grewal for

his valuable suggestions and support.

Training in an organization like “ZEPHYR” which is fuelled by the individuals with so

much zest & energy, “teaming” up to form a formidable force, was in itself a true

learning experience which is going to help us immensely in our career. There is no

substitute to “Teamwork”, this is one of the many lessons we learnt during our training in

“ZEPHYR SYSTEM Pvt. Ltd”.

I would like to thank and express our gratitude towards the personalities who have helped

us to undertake and complete this training. First and foremost I express my gratitude

towards Mr. RAHUL SINGH of general manager of ZEPHYR SYSTEM Pvt. Ltd. Also

Mr. KSHITIJ, Mr. GAURAV of ZEPHYR, for their support in completing this training.

They provided me valuable guidance and technical skill without which this training

would not have been possible.

They worked on the project as an advisor and offered us help when needed in every

aspect of project. The training at ZEPHYR gave me intense understanding of mobile

communication and the cellular technology concepts.

Special thanks to the talented people at - ZEPHYR to all of them and to each one

individually. They were growing source for inspiration for us throughout the

development process of this project.

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COMPANY

PROFILE

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Zephyr System Pvt Ltd

Zephyr…..

Incorporated in 2001.

ISO 9001:2000 Certified Company.

Pan India Operations.

Employees over 1200 and counting.

Average Annual Growth rate since inception 40%.

Statutory Compliances as per Law of the Land.

Zero Client Attrition.

Diversification as well as Specialization in various Business Verticals.

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Business Units

Business Units

TELECOM CONSTRUCTION ENERGY

Projects

O & M

Manpower

Training

Civil

NHAI

Railway

Equipment Sales

Solar Energy

O & M

Projects

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Telecom

Employee strength comprising of over 800 trained technicians and engineers

End to End solution in telecom industry for instrument manufacturer and the

operator

Outsourcing: Manpower deployment to telecom equipment manufacturers across

India

Experience in:

◦ Installation and commissioning

◦ Infra set up

◦ O&M – Active and Passive

◦ Drive Test

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Services Offered By Zephyr

Preventive Maintenance

Monthly preventive maintenance of the sites to prevent root cause of site down

Corrective Maintenance

Corrective maintenance to the site in case of site down

Material mobilization

Zephyr provides end to end material mobilization of all the faulty material and the new

material. It receives new material from the warehouse and submits the faulty material to

warehouse.

Stock Maintenance

Stock report for each & every cell site which includes faulty as well as new stock

available with Zephyr

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Preventive Maintenance

Rearranging all OFC cable routing and put it in to the conduit to protect it from the

physical damage.

Checking RSL and SNR and have the screen shot for the authentication of PM

Checking all the fixture and connecters to prevent VSWR & site down

It maintains data of passive equipment installed on sites like DG sets, Battery bank,

AC

Corrective Maintenance

Zephyr sends its team on site in case of any problem.

Its engineers have good efficiency and dedication towards the job assigned

Much familiar with the equipment installed on the MTS sites.

It also shifts the height of antennas & RRU for coverage

It also attends the site in case of customer complaints related to data and voice call.

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Trainee Engineers

“To enrich its trainees with the state of art technology and bridge the gap between the

educational institutes and current industry demands.”

Training

Provide knowledge and understanding of current & future technologies.

Bridge the gap between institutions and industries.

Provide the exposure to the Industrial Work Culture, Development Tools & Real

Time Projects.

Provide the guidance & support to enter into world’s largest & exponentially

growing telecommunication industry.

Exposure

Wireless Technologies

Network Programming

Protocol Stack Implementation, Analysis and Testing

Understanding of Telecommunication Technologies

Learning and exposure to working tools and software's

Real Time Exposure of Industry Level Projects

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Operations

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Clients…

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PROJECT

INTRODUCTION

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2G Flexi Edge BTS Modules

Many of new nokia bts working professional unable to get the flexi bts module units

description like(ERDA,ESMA,DTRX) etc , in this tutorial each and every unit equipped

in nokia bts has been described in detail. Student, Telecom Trainees (GET) and working

professional will get benefit out of it.

Diagrammatically the Nokia Flexy BTS module can be shown as above.

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There are some units which we should know, before we under stand the Flexi Card.

Some Important units which we should know before the explanation of Flexi card

Unit Name Unit Type Power & Bus From

ESMA System Controller Power Plant

ESEA System Extension Power Plant

EXxx Dual TRX ESMA/ESEA

ERxx Duplexer Unit EXxx

FIFA Radio Transmission Card ESMA

FIPA Wired line Transmission

Card

ESMA

FIEA Wired line Transmission

Card

ESMA

Every Unit name is of Four Letters. Small ‘x’ means there can be any letter depending

upon the version and RF Band of the unit. Sample is given for Wide Band Combiner is

given below.

E W x X

These two letters indicated unit name/type. Shows GSM Band. Shows Version of

unit.

Band Letter GSM Band Version Letter GSM Band

T 800 A Supports

Double Power

Mode.

G 900 B Does not

support Double

Power Mode.

D 1800

P 1900

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ESMA

ESMA is the controller & power unit of Flexi BTS. Details of all the connectors of ESMA

are as per below.

• P1 to P6 are Power connectors to give power to EXDA(DTRX)

• B1 to B6 are Bus Connectors to give Digital I/O connectivity to EXDA (DTRX).

• Each Bus corresponds to 2 TRX in BSC. Bus 1= TRX 1&2, Bus 2 = TRX 3&4, ends

on…..

• Same Power & Bus Connectors should be used for any DTRX. Means P1B1 or P2B2

etc….

• POWER is a connector where we have to provide filtered -48V DC from the power

plant.

• EAC is the connector of External Alarms.

• SO is the Synch Out connector used to give the clock to the expansion (chained)

BTS.

• SI is the Synch In connector used to accept the clock from the Master (chained)

BTS.

• FIFA/FIEA/FIPA is the slot for Transmission Card.

• Q1 is the connector for Q1 connectivity. Type:- RJ45

• LMP is the Local Management Port for Local Login Purpose. Type:- RJ45

• SS is connected to Nokia Site Support System (Nokia Provided Power Plant System)

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• FPA is connected to optional Flexi Power Module which converts AC to DC with

Battery Backup Unit.

EXxx

EXxx is a Dual TRX. It also gives power and Digital I/O connectivity to the Duplexer

(ERxx) Unit. Details of all the connectors of EXxx are as per below.

• BUS is connected to ESMA through BUS cable. DTRX is numbered according to the

Bus No. of ESMA to which it is connected. Like DTRX connected to Bus 1 will be

shown as EXxx1 in the Flexi BTS Manager.

• PWR is connected to corresponding ESMA power connector.

• ER is connected to the ERxx (Duplexer) Unit of the same sector.

• TxA is the Transmit Port of TRX A.

• TxB is the Transmit Port of TRX B.

• RxA is the Receive Port of TRX A. It will work as internal diversity input for TRX B.

• RxB is the Receive Port of TRX B. It will work as internal diversity input for TRX A.

• RxADiv is the External Diversity Port for TRX A. This can be used only with S13 (EP

2.0). Will be useful in case of 4 way uplink diversity.

• RxBDiv is the External Diversity Port for TRX B. This can be used only with S13 (EP

2.0). Will be useful in case of 4 way uplink diversity.

• DP is used in Double Power Mode; it is connected to DP connector of EWxA.

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ERxx

ERxx is a Duplexer Unit with internal Multi Couplers & two Full Duplex Antenna Ports.

Details of all the connectors of EXxx are as per below.

• Power and Digital I/O connectivity to the ERxx (Duplexer) unit is feed by EXxx

(DTRX) unit.

• It should be noted that power and Digital I/O connectivity to the Duplexer should be

given from the DTRX of the same sector.

• ERxx is numbered according to the number of its corresponding DTRX from which it

is taking Power & Digital I/O connectivity. Like if ERxx is connected to EXxx2 then it

will be shown as ERxx2 in the Flexi BTS Manager.

• TxA accepts Transmit Input for Antenna Port A.

• TxB accepts Transmit Input for Antenna Port B.

• RxA1 to RxA4 are the ports giving received signal from the Antenna A.

• RxB1 to RxB4 are the ports giving received signal from the Antenna B.

• ExtA, RxAO also gives received signal from Antenna A.

• ExtB gives received signal from Antenna B.

• RxAI is used give externally received signal to the duplexer.

Currently RxAO & RxAI are connected to each other. Block diagram of ERxx is self

explanatory for this.

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