Intelligent network

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The Intelligent Network, typically stated as its acronym IN, is a network architecture intended both for fixed as well as mobile telecom networks. It allows operators to differentiate themselves by providing value-added services in addition to the standard telecom services such as PSTN, ISDN and GSM services on mobile phones.

The intelligence is provided by network nodes on the service layer, distinct from the switching layer of the core network, as opposed to solutions based on intelligence in the core switches or telephone equipments. The IN nodes are typically owned by telecommunications operators (Telecommunications Service Providers).

IN is based on the Signaling System #7 (SS7) protocol between telephone network switching centers and other network nodes owned by network operators.


Examples of IN services

Examples of such services are:

  • Televoting
  • Call screening
  • Telephone number portability
  • Toll free calls / Freephone
  • Prepaid calling
  • Account card calling
  • Virtual private networks (e.g. : Family group calling)
  • Centrex service (Virtual PBX)
  • Private-number plans (with numbers remaining unpublished in directories)
  • Universal Personal Telecommunication service (a universal personal telephone number)
  • Mass-calling service
  • Prefix free dialing from cellphones abroad
  • Seamless MMS message access from abroad.
  • Reverse charging
  • Home Area Discount
  • Premium Rate calls
  • Call distribution based on various criteria associated with the call
    • Location Based Routing
    • Time based routing
    • Proportional call distribution (e.g. between two or more call centres or offices).
  • Call Queueing
  • Call transfer

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