the need for speed terry foley rhonda hoskins jerry gilroy jill morgan
Download
Skip this Video
Download Presentation
The Need For Speed Terry Foley Rhonda Hoskins Jerry Gilroy Jill Morgan

Loading in 2 Seconds...

play fullscreen
1 / 12

The Need For Speed Terry Foley Rhonda Hoskins Jerry Gilroy Jill Morgan - PowerPoint PPT Presentation


  • 60 Views
  • Uploaded on

The Need For Speed Terry Foley Rhonda Hoskins Jerry Gilroy Jill Morgan. High Speed Internet Technology. Outline. What is DSL? Where did DSL originate? How does DSL work? What types of DSL are available? Myths and Truths about DSL Its closest competitor

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' The Need For Speed Terry Foley Rhonda Hoskins Jerry Gilroy Jill Morgan' - ora-kerr


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
the need for speed terry foley rhonda hoskins jerry gilroy jill morgan

The Need For SpeedTerry FoleyRhonda HoskinsJerry GilroyJill Morgan

High Speed Internet Technology

High Speed Internet Technologies

outline
Outline
  • What is DSL?
  • Where did DSL originate?
  • How does DSL work?
  • What types of DSL are available?
  • Myths and Truths about DSL
  • Its closest competitor
  • http://computingcentral.msn.com/topics/bandwidth/howfast.asp
what is dsl
What is DSL?
  • DSL – Digital Subscriber Line
  • Uses ordinary telephone wire
  • Speed varies depending on type
  • An “always on” service – No dial-up
  • One line carries both data and voice
where did dsl originate
Where Did DSL Originate
  • Created by Bellcore in 1989
  • To deliver video on-demand to compete with cable TV
  • Never really used for this
  • People noticed the potential for internet applications
how does dsl work
How Does DSL Work
  • Implemented over the “last mile”
  • Uses digital technology
  • Utilizes line-coding scheme
  • Divides line into 3 bands
  • Lower for voice, Higher 2 for data
how does dsl work cont d
How Does DSL Work cont’d
  • Phone company must install special router – DSL access multiplexer
  • This transfers data from copper line to larger backbone
  • CO must be approx. 18000 ft from the end user for top performance
  • End user must have special router or modem
types of dsl
Types Of DSL
  • HDSL – High-Data-Rate DSL
  • ADSL – Asymmetric DSL
  • RADSL – Rate Adaptive DSL
  • SDSL – Symmetric DSL
  • VDSL – Very-High-Rate DSL
myths and truths
Myths And Truths
  • Myth – DSL is easy to install
  • Truth – Technician needed to install modem and wiring
  • Myth – Speed of DSL
  • Truth – Performance is effected by electromagnetic noise and distance
its closest competitor
Its Closest Competitor
  • Cable – It provides similar speeds, service and technology
  • Uses local TV line to give continuous connection
ad