INAP stands for intelligent network application part protocol.
INAP is the signaling protocol used in Intelligent Networking. A total functionality of the IN has been defined and implemented in digestible segments called capability sets . There have been CS – 1 , CS 2 etc.CAMEL Application Part (CAP) is a derivative of INAP. 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 service. These differentiated services include home area discounts and premium rate calls.
There are mainly four planes in Intelligent Network Conceptual Model.
The Service Plane (SP): This plane is of primary interest to service users and providers. It describes services and service features from a user perspective.
The Global Functional Plane (GFP): The GFP is of primary interest to the service designer. It describes units of functionality, known as service independent building blocks (SIBs)
The Distributed Functional Plane (DFP): This plane is of primary interest to network providers and designers. It defines the functional architecture of an IN-structured network in terms of network functionality.
The Physical Plane (PP): Real view of the physical network. The PP is of primary interest to equipment providers.
If we look at a definition of INAP, INAP is a signaling protocol between a service switching point (SSP), network media resources (intelligent peripherals), and a centralized network database called a service control point (SCP).
To understand this definition, it might be required to look into terms separately,
Service switching point (SSP) : Provides the switching functionality and detects special conditions during call processing. Intelligent peripherals provide resources such as customized and concatenated voice announcements, voice recognition.Service Control Point (SCP) main functions are processing SSP requests and issuing responses.
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