Welcome To Our Presentation

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Welcome To Our Presentation
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Bandwidth On Demand

• By
• Khaleb Abdelhadi
• Barbara Roberts
• Richard (Steve) King
• Randy Denny

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Technology Options for Bandwidth

• 56-kbps analog modem
• ISDN terminal adapter
• ADSL adapter
• Cable modem
• Satellite system
• T1 line

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Consider 56kbps Modem if

• Dont want to deal with installation woes
• Want to wait for other high-bandwidth
  technologies to arrive to your area

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Consider ISDN if

• You need higher speed NOW
• You can deal with the installation complexities
  and headaches
• You want a higher speed but cant afford the
  other options cost or drawbacks

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Consider ADSL if

• Point-to-point service is no problem for you
• Cost is not a crucial factor

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Consider Cable if

• Security is not important in your field
• Maximum promised throughput rate is not important
  to you

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Consider Satellite if

• You are a super web surfer desperate for
  bandwidth
• You live so far from civilization
• You dont upload files or send e-mail

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Consider T1 if

• You want fast downloads and uploads
• Cost is not a crucial factor
• Other technology options are not available in
  your area

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56kbps Modems

• They are a quick inexpensive way to double your
  download speed if your current modem is less than
  56k
• They are easy to install and configure
• They work over existing phone lines
• Many manufacturers like Hayes have trade-in
  programs so you can upgrade your older slower
  modem

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56k Modems continued

• They are far slower than the other high bandwidth
  options but they are far cheaper too
• Like any other technology, they rarely achieve
  the maximum throughput.
• They can achieve a download speed of only 53 kbps
  and upload speed limited to 33.6 kbps
• No TCU standard exists for it yet

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ISDN Terminal Adapters

• Three times as fast as a 56k modem
• Widely available
• more ISPs are offering ISDN services
• People reported that it was hard to install
• Expensive
• the adapter costs from 100 to 300
• phone companies charge from 100 to 400 to
  install it

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ADSL Adapter

• Competes with ISDN because it is ten times faster
  than ISDN at 1.5 mbps and the cost gap between
  them is getting narrower
• Only available in 14 major cities in the US
• The more people are using it the less upload
  speed you will get at a minimum of 640 kbps,
  which will be satisfactory for the majority of
  usesrs

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ADSL continued

• Because it is a point-to-point service
• You wont be able to make ADSL connections to
  anyone else over the public switched network
• It costs about 175 per month
• It promises to be a cost effective way for
  telecommuters to make fast net connections
• It runs through existing copper wire and saves
  dedicated channel for you

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Cable Modem

• More than twice as fast as ADSL at 30 mbps
• Its download speed is as fast as a T1, but
  uploads are significantly slower at 820 kbps
• The Cable system is shared by all users, which
  affects its theoretical speed and security
• It costs between 35 to 60 per month (some offer
  free modem installation)

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Cable continued

• The bottom line is that Cable will never replace
  the phone company as a networking transmission
  method in the business field that needs reliable
  high speed connections

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Satellite System

• Four times faster than ISDN
• The only networking solution to get connected to
  the rest of the world for people who live far
  away from civilization
• A combination of an ISA adapter and satellite
  dish gives a download speed of 488 kbps
• For uploads you still need a modem and an ISP

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Satellite System continued

• It costs about 130 per month but limits the time
  of day you can use the service, plus 500 for the
  dish
• Bottom line is that Satellite system is good for
  most web surfing and for receiving streaming
  video and audio, but its very slow for file
  uploads at about 16.6 kbps (slower than 28.8-kbps
  modem connection)

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T1 Line

• Very Expensive
• The equipment costs at least 2000
• Service runs at least 3000 a month
• You may have to act as your own ISP like setting
  up and managing mail and web servers
• Very fast uploads and downloads at 1.5 mbps
• Very common in the business field that needs very
  high bandwidth for networking

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Summary Table
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Documentation

• THE INFORMATION IN THIS PRESENTATION WAS MOSTLY
  BASED ON
• RESEARCH DONE BY PC WORLD MAGAZINE, AUGUST, 1998
  ISSUE

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Thank You