Methods of connecting internet

Its very informative for those who need to know about internet..and also helpful in class presentations..v felt so..

1. VARIOUS WAYS TO CONNECT INTERNET PRESENTED BY, DEEPAK DEVRAJ GEORGE M PAUL SHAMEER PARAKKAL STEPHIN DOMEY SNEHA M LIBU TITTU ANNA STEPHEN

2. INTRODUCTION INTERNET CONNECTIVITY IS A NECESSITY Typical issues that need to be clarified: Method Quantity Security measures

3. CONTENTS DIAL-UP CONNECTION ISDN SATELLITE CONNECTION DSL CABLE MODEM WI-FI WLAN WIMAX

4. DIAL – UP CONNECTION  Dial-up access is really just like a phone connection Connection through modem and a public telephone network. It uses analog telephone lines Encoding & Decoding of analog signals is done by modem Using a dial-up line to transmit data is similar to using the telephone to make a call Speed is only 56 kbps

5. PROCESS OF DIAL-UP The client computer modem dials the preprogrammed phone number Verification of user’s account by ISP Connection is established and data can be transmitted. When either modem hangs up, the communication ends.

6. ADVANTAGES Low cost Safety Availability DISADVANTAGES Low Speed Requires phone line Route busy

7. ISDN Integrated Services Digital Network Standard for digital telecommunications that allows fast digital dialup connections It put together speech and information on the same line An ISDN line can provide two data channels each operating at 64kbps ISDN service is available where the distance from the client to the exchange is under 55 km

8. ADVANTAGES Multiple digital channels Speedy establishment of connection It can be used for other activities like videoconferencing remote network maintenance DISADVANTAGE It is very costly than the other typical telephone system

9. SATELLITE CONNECTION

10. SATELLITE CONNECTION Internet access provided through satellites Data is being sent from the satellite to a user's equipment and then translated and decoded. Delivered through satellite dish Equipment required-mini dish satellite receiver and satellite modem It is one of the high-speed option available today Upload speed-128 kbps Download speed-400 kbps Satellite internet providers has a FAP(Fair Access Policy)

11. ADVANTAGES High speed internet access Does not tie up with local phone service or cable TV subscription Connection speed is not affected by phone or cable wiring

12. DISADVANTAGES More expensive than DSL and cable Large setup fee. Expensive equipment upfront. Has to be set up by trained technician. Short delay of signal transmission may affect real time applications Fair access policy limits the ability to download large files in reasonable amount of time Connection speed is slower than DSL and cable Weather problem. In severe snowstorms and heavy rain, users may experience signal fade

13. DSL

14. DSL Digital Subscriber Line High-speed data service that works over POTS copper telephone lines U ses a different part of the frequency spectrum than analog voice signals DSL Internet speeds started out at 960 Kbps download & 120 Kbps upload. Price not much more than the price of dial up, but twice the speed .

15. Two types of DSL ADSL :- Type of DSL that provides different bandwidths in the upstream and downstream directions It can support downstream bandwidths of up to 8 mbps and upstream bandwidths of 1.5 mbps Eg:- RADSL, VDSL.

16. SDSL :- Equal bandwidth for upstream and downstream activities More popularly used in business  It can offer 1.5 Mbps both for download and upload Egs:- HDSL and   SHDSL 

17. ADVANTAGES DSL simultaneously keeps your Internet connection and phone lines open Downloads are faster than uploads DSL uses the existing wiring infrastructure of your telephone lines DSL is secure It is always on

18. DISADVANTAGES DSL efficiency is related to distance Large amount of uploading is not possible DSL is limited to a certain perimeter No standardization Compared to dial up ,it is expensive

19. CABLE MODEM

20. CABLE MODEM Cable modems provide Internet access using the same cables that transmit cable television Cable modems are primarily used to deliver broadband internet access in the form of cable internet Cable modem connections are faster than dial-up and DSL connections. Connection speed fluctuate depending on the number of people using the service at the same time.

21. ADVANTAGES High connection speed Convenient Does not affect your phone line Connection speed is not affected by the distance from ISP operation center Easy setup with self installation kit  

22. DISADVANTAGES Higher price than dialup and DSL connection Higher security risk than dialup or DSL Not available to all cable TV networks Bandwidth is shared over the same cable line Connection speed is affected by the number of people using the internet at the same time in your neighborhood

23. WI-FI Wireless Fidelity Vic Hayes has been named as father of Wi-Fi Big internet buzz word & growing very rapidly Wi-Fi usually requires the ISP to invest quite a bit in transceivers Practical range is about 90 meters (300 feet) from the transceiver using normal powered transmitters At least 7 or more end users can be sharing the same master transceiver & still each be able to get up to 1544 Kbps.

24. ADVANTAGES Flexible working Reduced set up cost Avoid deterioration with time Eliminate re-configuring computers Password and security DISADVANTAGES Signal strength sensitivity Climatic conditions

25. WLAN Wireless Local Area Network Provide wireless network communication over short distances Uses radio or infrared signals instead of traditional network cabling Built by attaching a device called the access point IEEE 802.11 is the foremost standard for wireless LANs

26. WIMAX

27. WiMax W orldwide  I nteroperability   of  M icrowave  Ac cess Broadband wireless access technique Offers fast broadband connections over long distance Range of up to 30 miles Improves non-line-of-sight performance Great advantage to rural communities where cable & DSL wasn't available & to developing nations

28. ADVANTAGES Wimax coverage Wimax high speed Multi-functionality within Wimax Technology DISADVANTAGES Lack of quality Wimax range Wimax bandwidth High cost