Study on Bsnl Technologies

8/3/2019 Study on Bsnl Technologies

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STUDY ON BSNL TECHNOLOGIES

By

V.DIVYA

4/4 B.tech ECE-C

1210408361


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OVERVIEW

About BSNL

Making a Telephone Call

The Exchange

Internet Broadband

CDMA

GSM 3G

BSNLs IP TV


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About BSNL

State Owned Telecommunications

Company

Indias Oldest & Largest CSP

Status Of MINI RATNA

Supplies phone lines to other networks

Some Services are - Landline, Mobile,

Internet, ISDN, Audio/Video

Conferencing, Telex/Telegraph, INET


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BSNL IT Tool - DOTSOFT

First integrated telecom software

application in BSNL

Based on the latest software technologies

running on a WAN

Better customer satisfaction and

transparency


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Making a Telephone Call

Caller lifts handset, hears dial tone

Dials number, exchange receives

tones/pulses

Checks which exchange & connects the

call if available

Call completes, current flow stops, bill is

notified


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The Exchange

Telephone subscribers are served by

automatic exchanges

Exchanges present in BSNL are:>E-10B>OCB283

>EWSD

For smooth working- Computer Unit,

Power Plant, AC plant , MDF


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OCB-283

Digital Switching System

Supports analog & digital subscribers

Huge traffic handling capacity

Automatic recovery feature

Space requirement is small

Divisions of OCB->MDF Room

>Exploitation Room

>Switching Room


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INTERNET

Global system of interconnected CN that useTCP/IP

File transfer:>Break the file in to small packets

>Attach destination and source address in topackets>Multiplex and transmit these packets>At destination de-multiplex the packets

>Remove address bits from the packets andassemble the data in to the original file>Make source bits as destination address andsend the acknowledgement in to the source


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BROADBAND

High-speed digital Internet access

Any connection to the customer of 256

Kbit/s or greater

Broadband communication technology

types- Wire line Technology.

Wireless Technology.


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Wi-Fi

Short for wireless fidelity uses radio frequency to transmit data through the air

Advantages:

Setup CostReduced cabling required

FlexibilityQuick and easy to setup in Temp or permanent

space FreedomYou can work from any location that you can get a

signal

Disadvantages:

SpeedSlower than cable

RangeAffected by various mediumTravels best through open space

Reduced by walls, glass, water, etc


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WiMAX

Worldwide Interoperability for Microwave Access Provides wireless data over long distances

Advantages

>Single station can serve hundreds of users.

>Speed of 10 Mbps at 10 kilometers within line-of-site.

Disadvantages

>Bad weather conditions such as rain could interrupt the signal.

>Other wireless equipment could cause interference.

>WiMAX is a very power-consuming technology and requiressignificant electrical support.

>High installation and operational cost.


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CDMA

Cellular technology originally known as

IS-95

Transparent interface for a wireless

digital network

Wide-band spread spectrum techniques

More efficient


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GSM

Global System for Mobile A second generation cellular standard

ARCHITECTURE Mobile Station (MS)

Mobile Equipment (ME)

Subscriber Identity Module (SIM)

Base Station Subsystem (BSS)

Base Transceiver Station (BTS)

Base Station Controller (BSC)

Network Switching Subsystem(NSS)

Mobile Switching Center (MSC)Home Location Register (HLR)

Visitor Location Register (VLR)

Authentication Center (AUC)

Equipment Identity Register (EIR)


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Advantages of GSM over Analog

System

>Capacity increases

>Reduced RF transmission power and longerbattery life.

>International roaming capability.>Better security against fraud (through

terminal validation and user authentication).

>Encryption capability for informationsecurity and privacy.

>Compatibility with ISDN, leading to widerrange of services


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3G

Next generation of MCS

Enables a variety of data intensive

applications.

services such as multimedia, high speed

mobile broadband


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BSNLs IP TV

Internet Protocol Television

TV services over a networks operators

quality controlled network

services may be classified

Live television

Time-shifted programming

Video on demand


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CONCLUSION

Thus, this is an overview of some ofBSNL technologies which we comeacross in our day to day life.

The knowledge about thesetechnologies has helped us know howthey are applied practically.


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THANK YOU

Study on Bsnl Technologies

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