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    Digital Subscriber Lines

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    Digital Subscriber Lines Fast and affordable Internet access has become a big issue for private users and small businesses. Today users have many different options concerning Internet access. One can use a 56k/28k modem, cable modem, wireless, Ethernet, an ISDN connection, a T1 or T3 connection, or a DSL connection. Each method of connection has advantages and disadvantages concerning security, cost, and speed. A newer technology for users is DSL or a Digital Subscriber Line. DSL uses existing

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    Digital Subscriber Line (DSL) Digital Subscriber Line new technology that takes advantage of standard copper telephone line to provide secure, reliable, high-speed Internet access. DSL refers to the family of digital subscriber line technologies, such as ADSL, HDSL, and RADSL. Connection speed for DSL ranges from 1.44 Mbps to 512 Kbps downstream and around 128 Kbps upstream. Unlike traditional connections DSL such as analog modems and IDSN, DSL deliver continuous “always on” access. That means

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    Introduction: Digital Subscriber Line (DSL) has started its origin from a telephone company desires to offer an end to end digital network as a service and named it as "integrated services digital network (ISDN)". Being a low speed in the communication is one of the major defect in ISDN. The low speed is due to the “crosstalk” between telephone lines, crosstalk is nothing but the electromagnetic coupling between lines. The crosstalk from all other telephone lines result in large noise which reduces

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    1. An introduction Digital subscriber line (DSL) technology transforms an ordinary telephone line into a broadband communications link, much like adding express lanes to an existing highway. DSL increases data transmission rates by a factor of twenty or more by sending signals in previously unused high frequencies. DSL technology has added a new twist to the utility of twisted-pair telephone lines. DSL is a family of technologies that provide Internet access by transmitting digital data over

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    Internet Service Providers

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    increasingly technological world, the Internet plays a big role. It's hard to find someone that does not know what a web browser or web site is. People of all ages have access to a plethora of information, just by hooking their computer up to the phone line. However, like so many other technical services today, the Internet is not always free. In order for one to log on, they must have an Internet Service Provider (ISP). An ISP is simply an "organization that supplies access to the Internet". These organizations

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    standardized data-sharing protocols and universal connectivity, are making it easier for people to perform illicit activities via the Web.  Further, with broadband technologies such as Digital Subscriber Line and cable modems making there way into more and more homes, the bottleneck once provided by analog phone lines and modems is disappearing making it easier to share large multimedia files via the Internet. Illegally distributing copyrighted materials is harmful to the industries involved, preventing

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    as well. And Thus telephone companies are doing everything they can “to be on top” of the market. For instance, in 1999, Qwest Communications International, Inc. had an investment into Rhythms NetConnections Inc. for performance-class digital subscriber line (DSL) connectivity to addition that Rhythms has agreed to provide space to Qwest in their local facilities for collocation of call processing equipment and to use Qwest as its preferred web hosting provider. Rhythms provides high-speed networking

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    Cable Modems Vs. Digital Subscriber

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    many telephone companies, large on-line services and may soon be available from you local cable company. Computer users are an impatient group. They are starving for a faster way of connecting to the ‘net. Until now home users have had to suffer with the slow connections available with analog modems or spend a relatively large amount on having a digital line, such as ISDN, installed and then continue paying a lot for the monthly charges associated with such lines. Standard analog modems have always

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    DSL Technology

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    services that network access providers are offering now. These rapidly growing applications are placing a new level of demand on the telephone infrastructure. In particular, the local loop portion of the network (i.e., the local connection from the subscriber to the local central office) has become a challenge for telephone companies. Historically, this local loop facility has been provisioned with copper cabling which cannot easily support high bandwidth transmission. This environment is now being stressed

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    Networking Report

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    SHARING 3 APPLICATION SERVICES 4 E-MAIL 16.     THE INTERNET 17.     NETWORK SECURITY 18.     WORKSTATION HARDWARE 19.     BUS TOPOLOGY 20.     STAR TOPOLOGY 21.     RING TOPOLOGY 22.     TREE TOPOLOGY 23.     FIREWALLS 24.     DIGITAL SUBSCRIBER LINE (DSL) 25.     ACCOUNT SECURITY 26.     CONCLUSION 27.     RECOMMENDATION 28.     BIBLIOGRAPHY 29.     ANNOTATED BIBLIOGRAPHY 30.     APPENDICES APPENDIX 1.1: THE SERVER APPENDIX 1.2: THE NETWORK CARD APPENDIX 1.3: THE ROUTER

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