Digital Subscriber Line - meaning and definition. What is Digital Subscriber Line
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What (who) is Digital Subscriber Line - definition


Digital subscriber line         
  • DSL Modem schematic
  • DSL Connection schematic
  • SoC]]
  • Example of a DSLAM from 2006
  • A DSL modem
TECHNOLOGIES FOR TRANSMISSION OF DIGITAL DATA OVER TELEPHONE LINES
XDSL; Dsl; 64kbps; Universal DSL; DSL; VADSL; Vadsl; Very High Speed ADSL; DSL gateway; Asynchronous Transfer Module; DSl; Bdsl; Digital Subscriber Line; GDSL; Digital subscriber line (DSL)
Digital subscriber line (DSL; originally digital subscriber loop) is a family of technologies that are used to transmit digital data over telephone lines. In telecommunications marketing, the term DSL is widely understood to mean asymmetric digital subscriber line (ADSL), the most commonly installed DSL technology, for Internet access.
Digital Subscriber Line         
  • DSL Modem schematic
  • DSL Connection schematic
  • SoC]]
  • Example of a DSLAM from 2006
  • A DSL modem
TECHNOLOGIES FOR TRANSMISSION OF DIGITAL DATA OVER TELEPHONE LINES
XDSL; Dsl; 64kbps; Universal DSL; DSL; VADSL; Vadsl; Very High Speed ADSL; DSL gateway; Asynchronous Transfer Module; DSl; Bdsl; Digital Subscriber Line; GDSL; Digital subscriber line (DSL)
<communications, protocol> (DSL, or Digital Subscriber Loop, xDSL - see below) A family of digital telecommunications protocols designed to allow high speed data communication over the existing copper telephone lines between end-users and telephone companies. When two conventional modems are connected through the telephone system (PSTN), it treats the communication the same as voice conversations. This has the advantage that there is no investment required from the telephone company (telco) but the disadvantage is that the bandwidth available for the communication is the same as that available for voice conversations, usually 64 kb/s (DS0) at most. The twisted-pair copper cables into individual homes or offices can usually carry significantly more than 64 kb/s but the telco needs to handle the signal as digital rather than analog. There are many implementation of the basic scheme, differing in the communication protocol used and providing varying service levels. The throughput of the communication can be anything from about 128 kb/s to over 8 Mb/s, the communication can be either symmetric or asymmetric (i.e. the available bandwidth may or may not be the same upstream and downstream). Equipment prices and service fees also vary considerably. The first technology based on DSL was ISDN, although ISDN is not often recognised as such nowadays. Since then a large number of other protocols have been developed, collectively referred to as xDSL, including HDSL, SDSL, ADSL, and VDSL. As yet none of these have reached very wide deployment but wider deployment is expected for 1998-1999. Digital Subscriber Linecedpa/databus-issues/v38n1/xdsl.html">http://cyberventure.com/Digital Subscriber Linecedpa/databus-issues/v38n1/xdsl.html. 2Wire DSL provider lookup (http://2Wire.com/). ["Data Cooks, But Will Vendors Get Burned?", "Supercomm Spotlight On ADSL" & "Lucent Sells Paradine", Wilson & Carol, Inter@ctive Week Vol. 3 #13, p1 & 6, June 24 1996]. (2001-04-30)
xDSL         
  • DSL Modem schematic
  • DSL Connection schematic
  • SoC]]
  • Example of a DSLAM from 2006
  • A DSL modem
TECHNOLOGIES FOR TRANSMISSION OF DIGITAL DATA OVER TELEPHONE LINES
XDSL; Dsl; 64kbps; Universal DSL; DSL; VADSL; Vadsl; Very High Speed ADSL; DSL gateway; Asynchronous Transfer Module; DSl; Bdsl; Digital Subscriber Line; GDSL; Digital subscriber line (DSL)
Examples of use of Digital Subscriber Line
1. The UK has the highest availability for digital subscriber line broadband of any major country in the world.
2. He calls it the key building block‘‘ in making wireless Internet service competitive with cable and DSL (digital subscriber line) offerings.
3. In a note to investors, Goldman Sachs has estimated that the launch of digital subscriber line (high–speed internet access) services will drain cashflow until 2010.
4. Alcatel, which has expertise in high–speed digital subscriber line, or DSL, technology, would gain Lucent‘s dominance in wireless technology and contracts with big carriers such as Verizon.
5. Alcatel, which has expertise in high–speed digital subscriber line (DSL) technology, would gain Lucent‘s dominance in wireless technology and contracts with big carriers such as Verizon Communications.