1 / 24

Landline communication system

Landline communication system. Overview. Introduction Landline communication system. Examples. Introduction:. Types of communication systems:. What is a Landline?. A landline is a physical connection between two devices. Example on a Landline:

Download Presentation

Landline communication system

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.


Presentation Transcript

  1. Landline communication system

  2. Overview • Introduction • Landline communication system. • Examples.

  3. Introduction: Types of communication systems:

  4. What is a Landline? • A landline is a physical connection between two devices. • Example on a Landline: • Landline Phone (metal wire or fiber cable)

  5. Telephone

  6. History Of Telephone Alexander Graham inventing the first practical telephone. Thomas Edison, invented the carbon microphone which produced a strong telephone signal

  7. Bell on the telephone in New York (calling Chicago) in 1892

  8. How Telephone Works ?

  9. DSL -What is it ? - How does it work ? - What are the advantages and disadvantages ?

  10. What is DSL ? • DSL stands for Digital Subscriber Line. • It is a technology that brings huge data and information to homes and small businesses over ordinary telephone lines. • Different variations of DSL, such as ADSL, HDSL, IDSL, VDSL and RADSL.

  11. How does it work ?

  12. OVERVIEW • How is it connected ? • Speed Range. (from 144 Kb to 1.5 Mb per second)

  13. Process

  14. Advantages • DSL does not tie up the phone line. • Higher speed. • DSL doesn't necessarily require new wiring. • Some companies that offers DSL will usually provide the modem as part of the installation.

  15. Disadvantages - The farther you are from the central office, the slower your connection is. As you move away from the central office, more distortion enters the line and the signal deteriorates. - The connection is faster for receiving data than it is for sending data over the Internet. - The service is not available everywhere.

  16. Dial-up and DSL signals • Using Dial-up for internet. • Interfere with phone calls. Why ? • Slow. Why?

  17. Dial-up • Originally designed to carry “Speech”. • 300Hz to 3.4kHz • In one wire: • Phone call data + Internet data = ? NOISE

  18. DSL • Originally designed to carry “Data”. • 25kHz to 1.1MHz. • In one wire: • Phone call data + Internet data = ? BUT IN DIFFERENT FREQUENCIES

  19. The Splitter

  20. The Splitter • One input and two outs device: • Phone output get. • DSL output get. • Phone output gat is a Low-pass filter: • It passes DC to 3.4kHz.

  21. The Splitter

  22. EE205 TermProject Supervision of : DR. SAMIR AL-GHADHBAN Workers on the project: - BASEM ALSHAHRANI - SAUD KHAIR - ABDULAZIZ ALSENAIDE

  23. References • http://en.wikipedia.org/wiki/History_of_the_telephone • https://www.youtube.com/watch?v=Koylq78LzoM • http://www.epanorama.net/documents/telecom/adsl_filter.html • http://www.wisegeek.com • http://www.netstartechnology.net/ • http://computer.howstuffworks.com • http://www.dslreports.com/faq/117 • http://www.pcworld.com/article/14129/article.html

More Related