Gourt > Computers > Data Communications > DSL (4)
Digital Subscriber Line, or DSL, is a family of technologies that provide digital data transmission over the wires of a local telephone network.
Typically, the download speed of DSL ranges from 128 kilobits per second (kbit/s) to 24,000 kbit/s depending on DSL technology and service level implemented. Upload speed is lower than download speed for Asymmetric Digital Subscriber Line (ADSL) and equal to download speed for Symmetric Digital Subscriber Line (SDSL).
History
The origin of DSL technology dates back to 1988, when engineers at Bellcore (now Telcordia Technologies) devised a way to carry a digital signal over the unused frequency spectrum available on the twisted pair cables running between the telephone company's central office and the customer premises. Implementation of DSL could permit an ordinary telephone line to provide digital communication without interfering with voice services. However, incumbent local exchange carriers (ILEC) were not enthusiastic about DSL, since it was not as profitable as installing a second phone line for consumers who preferred simultaneous dial-up internet and voice connections, and the broadband data connection would cannibalize existing ISDN customers. This changed in the late 1990s when cable television companies began marketing broadband Internet access. Realizing that most consumers would prefer broadband Internet to dial-up Internet, ILECs rushed out the DSL technology, which they had delayed implementing, as an attempt to win market share from the broadband Internet access offered by cable television operators.
DSL is the principal competition of cable modems for providing high speed Internet access to home consumers in Europe and North America. Older ADSL standards can deliver 8 Mbit/s over about 2 km (1.25 miles) of unshielded twisted pair copper wire. The latest standard, ADSL2+, can deliver up to 24 Mbit/s, depending on the distance from the DSLAM. * Some customers, however, are located farther than 2 km (1.25 miles) from the central office, which significantly reduces the amount of bandwidth available (thereby reducing the data rate) on the wires.
More on [ Digital Subscriber Line ]
Your DSL line is still working (23:15)
dslstatus (DSL Status) Sat, 19 Dec 2009 22:15:24 -0000
Your DSL line is still working (23:15)
Your DSL line is still working (23:10)
dslstatus (DSL Status) Sat, 19 Dec 2009 22:10:24 -0000
Your DSL line is still working (23:10)
Chandler Lancaster has dsl. O: But he has good hair.
ChelseaaaMarie (Chelsea Magdaleno) Sat, 19 Dec 2009 22:09:54 -0000
Chandler Lancaster has dsl. O: But he has good hair.
Endlich wenigstens 1mbit DSL am Laptop beim Schwiegerpapa. Hab ihm nen WRT54GL geschenkt ;)
DelayLama (Mathias Lustig) Sat, 19 Dec 2009 22:09:39 -0000
Endlich wenigstens 1mbit DSL am Laptop beim Schwiegerpapa. Hab ihm nen WRT54GL geschenkt ;)
@littleseverine okay lol !! Dsl !!
Little__Joanna (Adaire Joanna) Sat, 19 Dec 2009 22:07:31 -0000
@littleseverine okay lol !! Dsl !!
@Habichtsberg die telekom mir mein dsl geschaltet + 120euro gutschrift wegen wechsel von #1und1 zur telekom.
Antrax_09 (Nils Lutz) Sat, 19 Dec 2009 22:05:56 -0000
@Habichtsberg die telekom mir mein dsl geschaltet + 120euro gutschrift wegen wechsel von #1und1 zur telekom.
Broadband Reports - Find DSL availability and prices for your zipcode. Source for all types of xDSL information, end-user reviews and ratings, discussions. Benchmark your line speed.
Meta Description: [ Broadband news, information and community, DSL · Cable · VOIP · Security · Satellite · Fiber · News · Tips · Reviews · Community · Tools ]
Direct Network Access - A source of information on DSL with glossary and news page.
Meta Description: [ dsl ]
DSL Prime - A news letter that covers the technology and business.
Meta Description: [ DSL ADSL for industry and consumers ]
DSLPlus - Check DSL providers and availability in your area.
Meta Description: [ One step check DSL availabilty, find a DSL Provider in your area by a portion of your phone number. ]
Everything DSL - Information on DSL with updated news and discussion board. Links to hardware vendors, consultants and ISPs.
Meta Description: [ Everything DSL offers you the largest selection of American broadband, DSL, cable, and satellite, and high speed Internet providers. Compare prices, plans, and sign up right online. ]
Navas Cable Modem/DSL Tuning Guide - Cable modem and DSL tips.
Meta Description: [ Cable modem and DSL tips on increasing speed, enhancing security, fixing problems, sharing a connection, and more. ]
Network World Fusion - Search engine for DSL related documents and resources.
Paradyne - DSL Sourcebook, well respected with plain answers on Digital Subscriber Line opportunities.
Slashdot - One man's struggle with the age old quest for high bandwidth.
Meta Description: [ Feature: Getting DSL -- article related to The Internet and Features. ]
| ISALEANE - TRIBANDE JOYCE - DAVID - SANDRINE | |
| Next Video | |
