Home and personal communication

Dial up
1. Links computer to telephone system using a Modem
2. modem connects to telephone socket
3. Modem can be external or internal to the computer
4. Advanatges
  1. Residential phone lines support dial up so can be used if broadband is unavailble
  2. Can use in different locations
5. Disadvantages
  1. Slow download speeds
  2. Blocks phone line when on interent
  3. Near impossible to view videos
  4. Difficult to download multimedia
Broadband
1. Fast internet connection such as ADSL
2. Asymmetric Digital Subscriber Line
3. ADSL uses existing telephone lines allowing high speed connection
4. Permanently connected to the internet
5. Faster updates, email delivering, better than dial up
6. Advantages
  1. Fast download speeds
  2. No blockage
  3. Internet always on
  4. Several devices can run at the same time
7. Disadvantages
  1. Speeds vary according to local usage + exchange distance
  2. Greater risk of hacking
Cable
1. Fibre optic cables provide homes with broadband/television,telephone services
2. Signals DO NOT get weaker if you move further away from the origin
3. upload/download speeds faster than ADSL
4. Advantages
  1. Constant high speed link
  2. Can be used for TV
  3. Very reliable
5. Disadvantages
  1. Expensive cables
  2. Access depends on location
Satellite
1. No cables needed
2. sends/receives signals from earth base
3. Useful in rural areas with no cables
4. Advantages
  1. No expensice cables
  2. Ideal for remote places
5. Dsadvantages
  1. Relies on line of sight
  2. Interactive games may lag because of signal delay
Mobile communictions
1. Smartphones can access the internet
2. Wireless laptops connect to hotspots (wireless)
3. Dongle = USB that allows computers to access the internet wirelessly. can be pay as you go or connected to your contract bill
4. Bluetooth connects to PDAs wirelessly and use ISP to connect to the internet. Can share voice, music videos and pictures
5. Advanatges
  1. Wireless
  2. Mobile
6. Disadvantages
  1. Distance from source is restricted
  2. Not all areas have coverage

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Home and personal communication

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	Creado por Matthew Stentiford hace más de 7 años