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DIGITAL SUBSCRIBER LINE

About of DIGITAL SUBSCRIBER LINE









DSL Q&A - Part One

  • . There are several variations of 'DSL' that include: ADSL - R-ADSL - HDSL - VDSL - SDSL - Asymmetric Digital Subscriber Line Rate-Adaptive Digital Subscriber Line High Bit-Rate Digital Subscriber Line Very High Bit-Rate Digital Subscriber Line Symmetric Digital Subscriber Line As the saying goes, 'there is no such thing as a free lunch' and a Telco must make compromises between costs, distance, speeds, reliability, equipment, etc when implementing or offering 'DSL' services.
  • . Each variation of 'DSL' reflects the different compromises made by Telco's when deciding how far and how fast data can flow on a particular kind of subscriber line.
  • . DSL technology enables much higher speeds across the twisted pair lines from the Central Office to the home, school or business.
  • . A whole Q&A document is dedicated to PPPoE here a DSL "modem" is a device that is placed at either end of the copper phone line to allow a computer (or LAN) to be connected to the Internet through a DSL connection.



    What is xDSL? - A Word Definition From the Webopedia Computer Dictionary
  • . xDSL is similar to inasmuch as both operate over existing copper telephone lines and both require the short runs to a central telephone office (usually less than 20, 000 feet).



    What is ADSL? - A Word Definition From the Webopedia Computer Dictionary
  • . ADSL Last modified: Friday, January 25, 2002 Short for a symmetric d igital s ubscriber l ine, a new technology that allows more data to be sent over existing copper telephone lines .
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  • . This paper describes the history of ADSL, copper lines, a proposed standard, and ideas on commercial implementations.
  • . Provides an overview of ADSL and then delves into the technical details, including Discrete Multitone (DMT) linecodes and Carrierless Amplitude Phase (CAP) modulation.
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    High-Tech Dictionary Definition
  • Definition for: Digital Subscriber Line (DSL).A way of sending digital data over regular copper telephone lines.It is also called .

    • info: DIGITAL SUBSCRIBER LINE


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    Digital Subscriber Line from FOLDOC
  • Digital Subscriber Line < , > (DSL, or Digital Subscriber Loop, xDSL - see below) A family of designed to allow high speed data communication over the existing telephone lines between end-users and telephone companies.


    Asymmetric Digital Subscriber Line from FOLDOC
  • Asymmetric Digital Subscriber Line < , > (ADSL, or Asymmetric Digital Subscriber Loop) A form of in which the bandwidth available for connection is significantly larger then for .
  • . The data-rate of ADSL strongly depends on the length and quality of the line connecting the end-user to the telephone company.


    Idiom Communications: Digital Subscriber Line Services
  • Digital Subscriber Line services and prices for DSL Digital Subscriber Lines (DSL) are regular copper phone lines that have special equipment at both ends of the line.
  • . Because none of the normal phone company equipment is involved, none of the normal phone line limits apply.
  • . DSL lines can run at very high speeds.
  • . DSL lines run over what the incumbent telco (usually PacBell) considers residential lines, line problems are given the same priority as other residential services.
  • . Some related terms: ISDN Digital Subscriber Line (IDSL) is a standard way to do 144kbps ISDN-like telco bypasses.
  • . Asymmetrical Digital Subscribe Line (ADSL) is a DSL line that can receive more than it can send or vice versa.
  • . With a router multiple computers can access the Internet over a single DSL line.
  • . Prices Covad DSL Idiom takes care of ordering lines, equipment and setting everything up.
  • . The speed of the residential services depend on line quality.


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    DSL (Digital Subscriber Line) (Linktionary term)
  • . It's free! to this site Electronic info DSL (Digital Subscriber Line) Search Linktionary (powered by ) Note: Many topics at this site are reduced versions of the text in "The Encyclopedia of Networking and Telecommunications." Search results will not be as extensive as a search of the book's CD-ROM.
  • . While DSL transmission can share the same wire used to transmit traditional analog voice calls, it can also support multiple lines of digital telephony within the frequency range that it operates.
  • . There is also no switching, which means that the line is a direct connection into the carrier's system.
  • . HDSL (High-Speed Digital Subscriber Line) HDSL is the most common and mature of the DSL services.
  • . It delivers data symmetrically at T1 data rates of 1.544 Mbits/sec over lines that are up to 3.6 kilometers (12, 000 feet) in length.
  • . Generally, HDSL is a T1 service that requires no repeaters but does use two lines.
  • . Voice telephone services cannot operate on the same lines.


    AT&T Digital Subscriber Line
  • > Digital Subscriber Line | Search This Site: What's New Check out our new features and updates.
  • . Welcome to the AT&T Digital Subscriber Line (DSL) Internet Service Care web site.
  • . With AT&T DSL Internet Service, your standard phone line is transformed into an "always on" connection that provides high-speed access to the Internet.


    Digital Subscriber Line
  • . Digital Subscriber Line Faster connections for PCs for telecommuters, branch offices Matthew Hamblen or Find out all you need to know about sensitive information that's been lost, stolen or hacked, as well as best practices for securing critical data.

    • DIGITAL SUBSCRIBER LINE ?



    Digital Subscriber Line: Information From Answers.com

  • On this page: Digital Subscriber Line DSL See .
  • . ( D igital S ubscriber L ine) A technology that dramatically increases the digital capacity of ordinary telephone lines (the local loops) into the home or office.
  • . Asymmetric DSL Fast Down - Slow Up ADSL - (Asymmetric DSL) ADSL shares ordinary telephone lines by using frequencies above the voice band, but the higher frequencies interfere with regular telephone usage.
  • . The first versions required a visit from the phone company to install a POTS splitter that divides the line into separate lines for DSL and telephone.
  • . Like ADSL, VDSL can share the line with the telephone.
  • . HDSL does not allow line sharing with analog phones.
  • . Like HDSL, SDSL does not share lines with analog phones.
  • . Since IDSL uses the same 2B1Q line coding as ISDN, ISDN customers can use existing BRI terminal adapters and routers.


    Asymmetric Digital Subscriber Line: Definition and Much More From Answers.com
  • On this page: Asymmetric Digital Subscriber Line ADSL abbr.
  • . Asymmetric Digital Subscriber Asymmetric Digital Subscriber Line - ADSL A new technology that provides high transmission speeds for video and voice to homes over ordinary copper telephone wire.
  • . Asymmetric Digital Subscriber Line ADSL standards ADSL G.DMT G.Lite ADSL2 ITU G.992.3/4 Annex J ITU G.992.3/4 Annex L ADSL2+ ITU G.992.5 Annex M Asymmetric Digital Subscriber Line ( ADSL ) is a form of, a data communications technology that enables faster data transmission over lines than a conventional can provide.
  • . Real world performance is also dependent to the line impedance, which can change dynamically either dependent on weather conditions (very common for old overhead lines) or on the number and quality of joints or junctions in a particular cable length.
  • . ADSL2/2+ also offer seamless bonding options, allowing lines with higher attenuation or lower signal to noise (SNR) ratios to be bonded together to achieve theoretically the sum total of the number of lines (i.e., up to 50 Mbit/s for two lines, etc.), as well as options in power management and seamless rate adaptation — changing the data rate used without requiring to resynchronize.


    DSL ( Digital Subscriber Line Circuits, DSL Services, DSL Lines, Broadband Internet Access, Digital Subscriber Line Carriers, Digital Subscriber Line Offerings, Digital Subscriber Line Services, DSL Carriers,
  • IT Information: White Papers, Product Literature, Webcasts and Case Studies - Create your personalized Bitpipe Service! Jun 16, 2006 Search Bitpipe: | Browse Bitpipe Dictionary: > > > DSL -- DSL offers broadband service over ordinary copper telephone lines.
  • . Recent DSL Products 990DSL CopperPro from Fluke Networks A next generation field test set for subscriber loop fault identification and location and voice and data line qualification.


    Asymmetric Digital Subscriber Line - Wikipedia, the free encyclopedia
  • ADSL standards ADSL G.DMT G.Lite ADSL2 ADSL2+ Asymmetric Digital Subscriber Line ( ADSL ) is a form of, a data communications technology that enables faster data transmission over lines than a conventional can provide.
  • . Real world performance is also dependent to the line, which can change dynamically either dependent on weather conditions (very common for old overhead lines) or on the number and quality of joints or junctions in a particular cable length.
  • . ADSL2/2+ also offer seamless bonding options, allowing lines with higher attenuation or lower signal to noise (SNR) ratios to be bonded together to achieve theoretically the sum total of the number of lines (i.e., up to 50 Mbit/s for two lines, etc.), as well as options in power management and seamless rate adaptation — changing the data rate used without requiring to resynchronize.
  • . By keeping the chunks small, an error on one frequency thus need not render the line unusable: the chunk will not be used, merely resulting in reduced throughput on an otherwise functional ADSL connection.


    ADSL, Asymmetric Digital Subscriber Line
  • ADSL, Asymmetric Digital Subscriber Line ADSL Tutorial Background Asymmetric Digital Subscriber Line offers the benefits of the Information Superhighway without the expense or wait.
  • . An ADSL circuit connects an ADSL modem on each end of a twisted-pair telephone line, creating three information channels -a high speed downstream channel, a medium speed duplex channel, and a plain old telephone service (POTS) channel.


    ADSL - Asymmetric Digital Subscriber Line
  •  You are here: >>> > > > FREE Newsletter Sign Up Now for the Wireless / Networking newsletter!   Search Suggested Reading Recent Discussions Related Blogs Most Popular What's Hot Related Topics "ADSL - Asymmetric Digital Subscriber Line" From, Your Guide to .
  • . ADSL works by allocating a majority of the available phone line frequencies for communication of downstream traffic.
  • . Also Known As: Asymmetric Digital Subscriber Line   | ©2006 About, Inc., A part of .


    DSL - Digital Subscriber Line Internet Service
  •  You are here: >>> > > > FREE Newsletter Sign Up Now for the Wireless / Networking newsletter!   Search Suggested Reading DSL - Related Terms Recent Discussions Related Blogs Most Popular What's Hot Related Topics "DSL - Digital Subscriber Line" From, Your Guide to .
  • . DSL provides high-speed networking over ordinary phone lines using technology.
  • . DSL technology allows Internet and telephone service to work over the same phone line without requiring customers to disconnect either their voice or Internet connections.
  • . Also Known As: Digital Subscriber Line, ADSL, SDSL   | ©2006 About, Inc., A part of .

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