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(Abbreviations)
(Abbreviations)
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* '''ADSL''' - Asymmetric Digital Subscriber Line. A protocol for broadband connections over telephone lines, in which greater provision is made for downstream data transfer than upstream.
 
* '''ADSL''' - Asymmetric Digital Subscriber Line. A protocol for broadband connections over telephone lines, in which greater provision is made for downstream data transfer than upstream.
 +
* '''dB''' - Decibel. A measure of gain or loss in a system. See [[Decibels|Decibels in the context of ADSL]]
 
* '''FTTC''' - Fibre To The Cabinet. A hybrid arrangement for telephone lines; fibre-optic cable links the exchange to street cabinets, and copper cable links the cabinets to user premises. Used for BT Infinity and similar offerings from other ISPs.
 
* '''FTTC''' - Fibre To The Cabinet. A hybrid arrangement for telephone lines; fibre-optic cable links the exchange to street cabinets, and copper cable links the cabinets to user premises. Used for BT Infinity and similar offerings from other ISPs.
 
* '''FTTP''' - Fibre To The Premises. Fibre-optic cable links the exchange directly to user premises.
 
* '''FTTP''' - Fibre To The Premises. Fibre-optic cable links the exchange directly to user premises.

Revision as of 21:11, 28 December 2011

A collection of technical terms and abbreviations.

Technical terms

  • Downstream - Refers to the movement of data towards the user from a remote location.
  • Upstream - Refers to the movement of data away from the user towards a remote location.


Abbreviations

  • ADSL - Asymmetric Digital Subscriber Line. A protocol for broadband connections over telephone lines, in which greater provision is made for downstream data transfer than upstream.
  • dB - Decibel. A measure of gain or loss in a system. See Decibels in the context of ADSL
  • FTTC - Fibre To The Cabinet. A hybrid arrangement for telephone lines; fibre-optic cable links the exchange to street cabinets, and copper cable links the cabinets to user premises. Used for BT Infinity and similar offerings from other ISPs.
  • FTTP - Fibre To The Premises. Fibre-optic cable links the exchange directly to user premises.
  • LAN - Local Area Network. A network of computers and associated devices which is entirely within a limited area, such as a house, school or office building.
  • SDSL - Symmetric Digital Subscriber Line. A protocol for broadband connections over telephone lines, in which equal provision is made for downstream and upstream data transfer.
  • VDSL - Very-high-bit-rate Digital Subscriber Line. A protocol for broadband connections over telephone lines, coaxial or fibre-optic cable.
  • VDSL2 - Very-high-speed Digital Subscriber Line 2. An enhanced version of VDSL, currently being employed on BT FTTC lines.
  • WAN - Wide Area Network. A telecommunications network which covers a broad area and links together several localities.
  • Wi-Fi or WiFi - A means of linking together electronic devices by wireless. Can be used within a LAN or to connect to a WAN by means of a hotspot.