Definition-
Definition-
An intelligent network (IN) is a service-independent telecommunications network. That is, intelligence is taken out of the switch and placed in computer nodes that are distributed throughout the network.
This provides the network operator with more efficient means to service creation and deployment .
Once introduced, services are easily customized to meet individual customer's needs.
IN provides a network capability to meet the ever-changing needs of customers.
Plain Old Telephone Service (POTS)
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Stored Program Control(SPC) Switching Systems
➢ in the mid-1960s
➢ service logic was programmable
➢ it was now easier to introduce new services
➢ service logic concept was not modular
➢ became increasingly more complicated to add new services.
Common Channel Signaling Network (CCSN)
➢ traditionally, the call setup info. and talk path used the same common trunk
➢ there were multiple offices involved in the routing of a call
Common channel signaling network (CCSN), or SS7 networks in mid- 1970s
➢ consists of packet data switching systems, signaling transfer points (STPs)
➢ it separates the call setup information and talk path from the common trunk
➢ the call setup information travels outside the common trunk path over the SS7 network
Common Channel Signaling
➢ SS7 technology frees up trunk circuits
➢ The SS7 network enabled the introduction of new services, such as caller ID.
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2. THE INTRODUCTION OF IN
Telcordia Technologies developed the concept of Intelligent Network 1 (IN/1)
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FEATURES OF IN/1-
➢ service control Points (SCPs)
➢ to communicate with the associated service logic( i.e. SCP), software was deployed in switching systems
➢ service- specific management systems
➢ software- defined hooks or triggers
Although the service logic is external to the switching system, it is still service specific.
THE AIN ARCHITECTURE
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AIN is a service- independent network capability!
3. BENEFITS OF INTELLIGENT NETWORKS
The main benefit of intelligent networks is the ability to accomplish the following:
➢ introduce new services rapidly
➢ provide service customization
➢ establish vendor independence
➢ create open interfaces
5. AIN RELEASE 1 ARCHITECTURE
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6. THE CALL MODEL - is a generic representation of SSP call-processing activities required to establish, maintain, and clear a basic call
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7. AIN RELEASE 0
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10. AIN SERVICE CREATION EXAMPLES
Service Creation Template
Extension Dialing Service
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Disaster Recovery Service
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Area Number Calling Service
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DO-NOT-DISTURB SERVICE
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11.OTHER AIN SERVICES
➢ N11 access service-
➢ basic routing-
➢ single number service-
➢ routing by day of week-
➢ routing by time of day-
➢ selective routing-
➢ call allocator -
➢ Alternate destination on busy (ADOB)-
➢ command routing-
➢ automatic route selection/least cost routing-
➢ work-at-home-
➢ holding room-
➢ call counter-
➢ advertising effectiveness service-
➢ virtual foreign exchange service-
➢ AIN for the case teams (ACT)-
➢ regional intercept-
➢ work at home billing-
➢ inbound call restriction-
➢ flexible hot line-
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