Types of Internet Connections - R.D.sivakumar

1. Types of internet connections
AUTHOR
R.D.SIVAKUMAR,M.Sc.,M.Phil.,M.Tech.,
Assistant Professor of Computer Science &
Assistant Professor and Head, Department of M.Com.(CA),
Ayya Nadar Janaki Ammal College,
Sivakasi – 626 124.
Mobile: 099440-42243
e-mail : sivamsccsit@gmail.com
website: www.rdsivakumar.blogspot.in
CO-AUTHOR
K.SIVAKAMI, B.Com. (CA)
Student of M.Com. (CA)
Ayya Nadar Janaki Ammal College,
Sivakasi – 626 124.

2. Types of internet connections
• The organization that provides internet connection to
public is called as internet service provider (ISP).
• In India, the popular ISPs are BSNL, reliance and
airtel.

3. The common methods of internet access include:
• Dial-up including ISDN
• ADSL
• Cable internet access
• Leased line
Types of internet connections

4. • Wi-Fi
• WiMAX
• Satelite
• Mobile phones
• Broadband over power line
• Fiber optics connections
Types of internet connections

5. Dial-up internet access
• Dial-up internet access is a form of internet access
that uses the facilities of the public switched
telephone network (PSTN) to establish a dialed
connection to an internet services provider (ISP) via
telephone lines.

6. Dial-up internet access
• The user’s comuter or router uses an attached modem
to encode and decode internet protocol packets and
control information into and from analogue audio
frequency signals, respectively

7. Asymmetric Digital Subscriber Line
• Asymmetric Digital Subscriber Line (ADSL) is one
form of the Digital Subscriber Line technology that
enables faster data transmission over copper
telephone lines than a conventional voiceband
modem can provide.

8. • It does this by utilizing frequencies that are not used
by a voice telephone call.
• A splitter,or DSL filter,allows a single telephone
connection to be used for both ADSL service and
voice calls at the same time.
Asymmetric Digital Subscriber Line

9. • ADSL can generally only be distributed over short
distances from the central office,typically less than
4kilometres,but has been known to exceed 8
kilometres (5mi) if the originally laid wire gauge
allows for further distribution.
Asymmetric Digital Subscriber Line

10. Cable Internet access
• Cable Internet access is a form of broadband Internet
access that uses the cable television infrastructure.
• Like digital subscriber line and fiber to the premises
services, cable Internet access provides network edge
connectivity (last mile access) from the Internet
service provider to an end user.
•

11. Cable Internet access
• It is integrated into the cable television infrastructure
analogously to an end user.
• It is integrated into the cable television infrastructure
analogously to DSL which uses the existing telephone
network.

12. • Cable TV networks and telecommunications
networks are the two predominant forms of
residential internet access. Recently, both have seen
increased competition from fiber deployments,
wireless, and mobile networks.
Cable Internet access

13. Leased line
 A leased line is a service contract between a internet
service provider and a customer, where by the
provider agrees to deliver a symmetric
telecommunications line connecting two or more
location in exchange for a monthly rent (hence the
term lease).

14. Leased line
 It is sometimes known as a ‘private circuit’ or ‘date
line’ in the UK or as CDN (circuito diretto numeric)
in Italy. Unlike traditional PSTN lines it does not
have a telephone number, each side of the line being
permanently connected to the other.
 Leased lines can be used for telephone, date or
internet services.

15. Wi-Fi
• Wi-Fi stands for wireless fidelity. Wi-Fi enabled
device such as a personal computer, video game
console, Smartphone or digital audio player can
connect to the internet.
• When within range of a wireless network connected
to the internet.

16. Wi-Fi
• The coverage of one or more (interconnected) access
points- called hotspots-generally comprises an area
the size of a few rooms but may be expanded to cover
many square mies, depending on the number of
access points with overlapping coverage.

17. Wi MAX
• WiMAX (worldwide interoperability for microwave
access) is a telecommunications protocol that
provides fixed and fully mobile internet access.
• The current WiMAX revision provides up to
40Mbit/s with the IEEE 802.16m update expected to
offer up to 1 Gbit/s fixed speeds.

18. • The name “WiMAX” was created by the WiMAX
forum, which was formed in june 2001 to promote
conformity and interoperability of the standard.
Wi MAX

19. Satellite internet access
• It is the internet access provided through satellites.
This service can be provided to world-wide users
throught Low Earth Orbit(LEO) satellites.
• Geostationary satellites can offer higher dataspeeds,
but their signals cannot reach some polar regions of
the world.

20. Satellite internet access
• Different types of satellite systems have a wide range
of different features and technical limitations, which
can greatly affect their usefulness and performance in
specific applications.

21. Mobile phones
• A mobile phones (also called mobile, cellular
telephone, or cell phone) is an electronic device used
for two-way radio telecommunication over a cellular
network of base stations known as cell sites.

22. • mobile phones differ from cordless telephones, which
only offer telephone services within limited ranges
throught a single base station attached to a fixed and
line, for example within a home or an office.
Mobile phones

23. • A mobile phone allows its user to make and receive
telephone calls to and from the publice telephone
network which includes other mobiles and fixed-line
phones across the world.
Mobile phones

24. Power line communications
• Power line communication or power line carrier (PLC),
also known as power line digital subscriber line (PDS
L), mains communication, power line telecom
(PLT),power line networking(PLN), or broadband over
power lines (BPL) are system for carrying data on a
conductor also used for electric power transmission.

25. • Electrical power is transmitted over high voltage
transmission lines, distributed over medium voltage,
and used inside buildings at lower voltages. Power
line communications can be applied at each stage.
Power line communications

26. Fiber optics connections
• Fiber is a generic term for any broadband network
architecture that uses optical fiber to replace all or
part of the usual metal local loop used for last mile
telecommunications.