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dsl: Definition and Recommended Links

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DSL or xDSL, is a family of technologies that provide digital data transmission over the wires of a local telephone network. DSL originally stood for digital subscriber loop, although in recent years, the term digital subscriber line has been widely adopted as a more marketing-friendly term for ADSL, which is the most popular version of consumer-ready DSL. DSL uses high frequency, while regular telephone uses low frequency on the same telephone line.
Typically, the download speed of consumer DSL services ranges from 256 kilobits per second (kbit/s) to 24,000 kbit/s, depending on DSL technology, line conditions and service level implemented. Typically, upload speed is lower than download speed for Asymmetric Digital Subscriber Line (ADSL) and equal to download speed for the rarer Symmetric Digital Subscriber Line (SDSL).
Source: Wikipedia (http://en.wikipedia.org/wiki/DSL)

other great electronics sites:ee toolbox site

- dsl
  - DSL or xDSL, is a family of technologies that provide digital data transmission over the wires of a local telephone network. DSL originally stood for digital subscriber loop, although in recent years, the term digital subscriber line has been widely adopted as a more marketing-friendly term for ADSL, which is the most popular version of consumer-ready DSL. DSL uses high frequency, while regular telephone uses low frequency on the same telephone line.
    Typically, the download speed of consumer DSL services ranges from 256 kilobits per second (kbit/s) to 24,000 kbit/s, depending on DSL technology, line conditions and service level implemented. Typically, upload speed is lower than download speed for Asymmetric Digital Subscriber Line (ADSL) and equal to download speed for the rarer Symmetric Digital Subscriber Line (SDSL).
    Source: Wikipedia (http://en.wikipedia.org/wiki/DSL)
    (Note: The Electronic Engineers Toolbox provides an alternative set of featured links for this word at http://www.cera2.com/dsl.htm)
    Featured Links:
    
    FCI Develops Customized Solutions for E1/T1 and VDSL applications
    FCI, one of the leading suppliers of connectors and interconnect systems, has developed several customized I-O connector solutions for E1/T1 and xDSL applications, including a cable connector and a board connector solution. These solutions are ideal in the telecom industry. The E1/T1 transmission protocol is used to transmit voice and data between devices and runs at a speed of 2Mbit/s. ADSL and VDSL (-2) solutions run at higher speeds,...
    http://portal.fciconnect.com
    
    A Guide to Broadband Interface Chips, Second Edition (Paid Report)
    Delivers a comprehensive analysis of the major vendors offering products for this dynamic market. Vendors for passive optical networks include Broadlight, Centillium, Conexant, Freescale, Immenstar, PMC-Sierra, and Teknovus. Also covered are leading VDSL2 vendors Broadcom, Centillium, Conexant, Infineon, and Ikanos. We examine the VDSL2 and PON silicon markets, applications, and vendors as we look at silicon for both ends of the wire: CO and...
    http://www.linleygroup.com/Reports/bb_guide.html
    
    Voice over Digital Subscriber Line (VoDSL)
    The changes in the forces that shape the communications industry have been well documented and are nearing the level of common knowledge; examples include regulation and technology. Digital subscriber line (DSL) is the technology that is employed between a customer location and the carrier’s network that enables more bandwidth to be provided by using as much of the existing network infrastructure as possible.
    http://www.iec.org/online/tutorials/voice_dsl/
    
    Asymmetric Digital Subscriber Line (ADSL)
    Asymmetric digital subscriber line (ADSL) is a new modem technology that converts existing twisted-pair telephone lines into access paths for high-speed communications of various sorts. Overview ADSL can transmit more than 6 Mbps to a subscriber - enough to provide Internet access, video-on-demand, and LAN access.
    http://www.iec.org/online/tutorials/adsl/
    
    University of New Hampshire's InterOperability Lab (IOL)
    A cooperative structure to improve the effectiveness of distributed computing, the University of New Hampshire's InterOperability Lab (IOL) is a valuable resource for the vendor community to verify the interoperability of their products. Test suites available, include: 10GEC ADSL Bridge Functions DOCSIS Fast Ethernet Fibre Channel Gigabit Ethernet IPv6 MPLS Routing SHDSL Voice over Broadband VDSL Wireless
    http://www.iol.unh.edu/
    
    You've measured the jitter, now how do you fix it?
    While making accurate measurements is important, you need to identify the root causes of jitter problems before you can minimize them. Keys to success include understanding how to best use your jitter analysis tool, plus how jitter propagates in a communications system. Find out more!
    http://ad.doubleclick.net
    
    Digital Subscriber Line
    Topics include Asymmetric Digital Subscriber Line (ADSL), ADSL Technology, and Very-High-Data-Rate Digital Subscriber Line (VDSL).
    http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/adsl.htm
    
    Conexant’s Dsl Technology Powers Zte’s Next-generation Dslams
    Conexant Systems, Inc. (NASDAQ: CNXT) today announced that its ADSL2plus central office (CO) solutions are now shipping in volume quantities to ZTE Corporation, a leading global provider of telecommunications equipment and network solutions based in China. Conexant’s CX95516 and CX95524 devices are being used to power ZTE’s new ZXDSL 9806H CO digital subscriber line access multiplexers (DSLAMS), which are now being deployed in worldwide...
    http://www.conexant.com/servlets/DownloadNewsServlet/08252008-1.pdf
    
    DSL Forum
    DSL Forum is a consortium of more than 400 leading industry players covering telecommunications, equipment, computing, networking and service provider companies. The Forum is focussed on the complete portfolio of digital subscriber line (DSL) technologies designed to deliver ubiquitous broadband services for a wide range of situations and applications that will continue the transformation of our day-to-day lives in an on-line world.
    http://www.dslforum.org/
    
    Digital Subscriber Line (DSL) and the Evolution of Asynchronous Transfer Mode (ATM)
    Overview Deregulation, together with increasing consumer and business demand for high bandwidth services, has led to increased competition among service providers. This increase in competition has, in turn, presented providers with an important set of business challenges. With increased competition, it becomes critical for providers to market and press for innovative services. Providers must move up the value chain in service delivery,...
    http://www.iec.org/online/tutorials/dsl_atm/
    
    Explanation: these links are provided as part of our EE glossary project, which seeks to identify the most prominent keywords in embedded systems, embedded software, realtime and rtos, dsp (digital signal processing), system-on-a-chip, microprocessors and microcontrollers, and other constituent elements for embedded systems. While we seek to keep most of the links up-to-date, the user is refered to other primary electronic-based search sites such as: cera2.com, embedded.com, or EDN Magazine. If you have any suggestions of links or definitions, please email!

Last updated: Mon Aug 4 2008
Creator: Luis Viterbo, Web Surfer and Professional Engineer, email

Mark Twain quote for the day:

Consider that a conversation by telephone - when you are simply sitting by and not taking any part in that conversation - is one of the solemnests curiosities of this modern life.
- A Telephonic Conversation, 1880