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  1. 1. How High-speed Dial-up WorksName:Ryo ObataNo:s11500521.Introduction to How High-speed Dial-up Works A Dial-up network is a circuit with a very slow speed with thetechnology present now.Therefore, it waits in the connect time of a network in manycases. But NetZero and EarthLink are going to make the dial-upnetworking the high-speed circuit.According to it, it is possible to make speed of dial-up networkinginto about 5 times over the past. In order that the usual dial-up networking may block atelephone line while making the first connection, it becomesimpossible to use it, but this high-speed dial-up networking canuse a circuit also during connection after the first communication.
  2. 2. 2. High-speed Dial-up: Acceleration Servers In the case of transmission and reception of information, theusual dial-up networking is searched from the data of aconnection persons protocol, a name, etc., and starts connection.Although this procedure is simple, it will require time forconnection very much. For that reason, when this procedure is simplified to someextent, information is transmitted also from the server side and adifference checks the compatibility of the information itselfmutually, simplification of connection can be measured and thetime to final connection can be shortened. Although this time shortened changes with machines, it ispossible to be shortened from the usual minute half about toabout 1/3 speed. Moreover, if connection is made to establish once, browsing of aweb page of the rest will be attained, without completing acomplicated procedure.
  3. 3. 3.High-speed Dial-up: File Compression An element important for high-speed dial-up networking iscompression of an information transmitting file.When transmitting and receiving a file, before transmitting datato the user who receives, the network side transmits by carryingout lossy compression of the file. Compression is canceled by the user side and the file to which itwas transmitted can check data anew. Although data may be lost between the processes of thecompression, the loss of the data is trifling and is not a gradewhich a user notices.
  4. 4. 4. High-speed Dial-up: Filtering and Caching In the case of the browser which carries out the direct entry ofthe URL, high-speed dial-up networking issues a command sothat specific Paige may be demanded. Under the present circumstances, since a circuit must be usedfor that pop-up then an advertisement may come out in pop-upand it meets, the speed of a circuit may fall temporarily. In order to avoid it, the address which may place anadvertisement is looked for, and dial-up networking copes with itso that the portion may not be read. Moreover, about the cash advance of a browser, what was readis always displayed about what was read once, and a high-speedcash advance becomes possible by not making it updateintentionally.
  5. 5. 5. High-speed Dial-up: The Bottom Line An element of direct high speed dial-up networking helps withthe use sense of the user, and is smart; put it together. Thedial-up networking that was a fire lengthened the life and in thisway reclaimed the new way more for the future of the line. It willbecome one step of progress to the person who is not yet ready tocarry out the reclamation of the broadband line. If these still continue, dial-up networking in itself is thought tostill continue.
  6. 6. 6.Lots More InformationRelated HowStuffWorks Articles • How Telephones Work • How Modems Work • How WiFi Works • WiFi Quiz • DSL Quiz • How DSL Works • How Cable Modems Work • How Web Servers Work • How Routers Work • How Broadband over Powerlines WorksMore Great Links • High Speed Internet Access Guide • Propel: How does it work? • V.92 FAQ • NetZero: FAQ • PC World: Speed Up Your Dial-Up Connection - January 2003Sources • Propel: How does it work? • V.92 FAQ • Net Zero: FAQ • PC World: Propel Accelerator v4.1 • Propel Accelerator Technical Overview • Comparison of SlipStream Datas Compression and Other Approaches • FCC: CDT Inquiry Concerning High-Speed Access to the Internet Over Cable and Other Facilities