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Types of Internet Connections - R.D.sivakumar

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Types of Internet Connections - R.D.sivakumar

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Types of Internet Connections - R.D.sivakumar

  1. 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. 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. 3. The common methods of internet access include: • Dial-up including ISDN • ADSL • Cable internet access • Leased line Types of internet connections
  4. 4. • Wi-Fi • WiMAX • Satelite • Mobile phones • Broadband over power line • Fiber optics connections Types of internet connections
  5. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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.

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