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DIGITAL SUBSCRIBER LINE
Prepared by:
Ebrahim Mohammed Abdo
M031220004
Definition
 DSL is a high-speed Internet service like cable

Internet.
 DSL provides high-speed networking over
ordinary phone lines using broadband
modem technology.
 DSL technology allows Internet and telephone

service to work over the same phone line without
requiring customers to disconnect either their
voice or Internet connections.
 DSL Internet services are used primarily in homes
DSL Modem
What Are the Different Types of DSL
Technology?
 All types of DSL Internet service can be categorized as :
 Asymmetric DSL ( ADSL) : provide more network

bandwidth for downloading than for uploading. By reducing
upstream bandwidth, service providers are able to offer
more bandwidth downstream.
 Asymmetric DSL technology is designed for residential
users; it is not suitable for businesses.
 Symmetric DSL (SDSL): provide equal bandwidth for both

uploads and downloads.
 Symmetric DSL technology is popular for business-class
DSL services as companies often have greater needs for
transferring data.
Figure 9.11 Bandwidth division in ADSL

9.5
Equipment
 On the side of the customer is a DSL

modem required.
 splitter is needed to separate phone line with
DSL line.
 On the side of the provider of the line is
a DSLAM equipped.
Figure 9.12 ADSL modem

9.7
DSL Applications
 Internet Access & File Sharing
 Video
o
o
o

Broadcast TV
Video On Demand
User generated video

 Telecommuting
 Online Education & Shopping
 Online Gaming
Market Status of DSL Technology
 DSL is the #1 Broadband Choice in the World

with over 65% market share and more than
200 million users
 DSL is available in every region of the world,

and ADSL owns the majority of the market.
 DSL is capable of providing up to 100 Mbp,

and supports voice, video and data.
Table 9.2 Summary of DSL technologies

9.10

More Related Content

DSL

  • 1. DIGITAL SUBSCRIBER LINE Prepared by: Ebrahim Mohammed Abdo M031220004
  • 2. Definition DSL is a high-speed Internet service like cable Internet. DSL provides high-speed networking over ordinary phone lines using broadband modem technology. DSL technology allows Internet and telephone service to work over the same phone line without requiring customers to disconnect either their voice or Internet connections. DSL Internet services are used primarily in homes
  • 4. What Are the Different Types of DSL Technology? All types of DSL Internet service can be categorized as : Asymmetric DSL ( ADSL) : provide more network bandwidth for downloading than for uploading. By reducing upstream bandwidth, service providers are able to offer more bandwidth downstream. Asymmetric DSL technology is designed for residential users; it is not suitable for businesses. Symmetric DSL (SDSL): provide equal bandwidth for both uploads and downloads. Symmetric DSL technology is popular for business-class DSL services as companies often have greater needs for transferring data.
  • 5. Figure 9.11 Bandwidth division in ADSL 9.5
  • 6. Equipment On the side of the customer is a DSL modem required. splitter is needed to separate phone line with DSL line. On the side of the provider of the line is a DSLAM equipped.
  • 7. Figure 9.12 ADSL modem 9.7
  • 8. DSL Applications Internet Access & File Sharing Video o o o Broadcast TV Video On Demand User generated video Telecommuting Online Education & Shopping Online Gaming
  • 9. Market Status of DSL Technology DSL is the #1 Broadband Choice in the World with over 65% market share and more than 200 million users DSL is available in every region of the world, and ADSL owns the majority of the market. DSL is capable of providing up to 100 Mbp, and supports voice, video and data.
  • 10. Table 9.2 Summary of DSL technologies 9.10

Editor's Notes

  1. "Digital Subscriber Line." It is medium for transferring data over regular phone lines and can be used to connect to the Internet.
  2. digital subscriber line access multiplexer(DSLAM)