Softswitch INAP Adapter for PSTN to NGN Interconnection
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Solution Overview
Problem
The interconnection of intelligent network services between traditional PSTN networks and next generation networks is challenging due to structural, principle, and standard differences, making it difficult for users to access intelligent services across these networks.
Innovation Solution
A Softswitch system is introduced, comprising a network adaptive device, call server, and INAP adapter, which transforms call requests between PSTN and next generation networks, enabling communication and processing of intelligent network services through SCPs using protocols like SIGTRAN and TCP/IP.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional PSTN networks and next generation networks are kept separate, then each network maintains its structural integrity and operational standards, but users cannot access intelligent services across different network types
Solution Approach 1:
The patent introduces an intelligent network interconnection device as a mediator between PSTN and NGN networks. This device includes a PSTN interface for connecting to traditional networks and an IP interface for connecting to next generation networks, enabling protocol translation and message formatting conversion. The intermediary handles the complexity of interconnection, allowing users to access intelligent services across network boundaries without requiring direct integration between the two network architectures.
2Adaptability or versatility
If intelligent network services are implemented in next generation networks, then service functionality is enhanced, but compatibility with traditional PSTN services becomes difficult to achieve
Solution Approach 1:
The patent employs parameter changes by transforming message formats and protocols between different network types. The interconnection device converts PSTN signaling protocols into IP-based protocols suitable for NGN networks, and vice versa. This includes converting call request formats, service access codes, and intelligent network protocol (INAP) messages into appropriate formats for the target network, ensuring reliable service compatibility while maintaining enhanced functionality in both network environments.
3Adaptability or versatility
If protocol translation is implemented between PSTN and NGN, then service interconnection is enabled, but processing time and system complexity increase
Solution Approach 1:
The patent implements preliminary action by pre-configuring protocol translation rules and message format mappings in the intelligent network interconnection device. The device maintains translation tables and protocol conversion configurations that are prepared in advance, allowing rapid message transformation when calls are initiated. This pre-prepared infrastructure reduces real-time processing delays, enabling efficient protocol translation while maintaining service interconnection capabilities between PSTN and NGN networks.
Data Source
AI summary
The present invention discloses a Softswitch and system for implementing the intelligent network in the next generation networks and a method for interconnecting the intelligent networks to the PSTN. The Softswitch comprises: a network adaptive device for implementing the communication between the Softswitch and other devices in said network, as well as receiving the call request; a call server for determining whether the call received by said network adaptive device is a common call or the call of the intelligent network and processing the common call; and an INAP adapter for responding the call of the intelligent network and encoding/decoding the INAP message.