VoIP Routing Authority Look-Ahead Token Mechanism
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Solution Overview
Problem
VoIP service providers face challenges in global number discovery and interconnection, requiring complex administrative tasks and intermediate networks to communicate with VoIP clearinghouses for call routing, which increases complexity and call detail records.
Innovation Solution
A VoIP inter-exchange carrier or clearinghouse provides routing and secure access control across multiple network domains using a single routing and admission request, performing multiple route look-ups at the source to determine all possible routes and issuing look-ahead tokens for the entire call path, allowing the call source to establish communication sessions directly with intermediate networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If VoIP service providers establish bilateral interconnect agreements with every other VoIP service provider to replicate inter-exchange carrier service, then global calling capability is achieved, but administrative complexity increases significantly
Solution Approach 1:
The patent introduces a centralized routing authority as an intermediary that maintains the routing database and issues look-ahead tokens. This mediator eliminates the need for bilateral agreements between all service providers, reducing administrative complexity while maintaining global calling capability. The routing authority acts as a trusted third party that enables indirect peer-to-peer routing between networks.
2Productivity
If intermediate networks communicate with VoIP clearinghouses for call routing, then call completion is achieved, but the number of call detail records increases
Solution Approach 1:
The patent implements look-ahead routing where the routing authority performs route lookups in advance and embeds the complete call path information in tokens issued at call setup. This preliminary action eliminates the need for intermediate networks to query the clearinghouse during call progression, reducing the number of call detail records generated while ensuring call completion.
3Productivity
If multiple route look-ups are performed at the source to determine all possible routes, then routing optimization is achieved, but processing time increases
Solution Approach 1:
The system performs multiple route look-ups in advance during token generation at call setup, embedding the optimized call path information in the look-ahead token. This preliminary routing optimization avoids real-time processing delays during call execution, as the complete route information is already determined and embedded in the token.
4Measurement precision
If a centralized routing database is maintained by the VoIP carrier, then routing accuracy is improved, but system complexity increases
Solution Approach 1:
The centralized routing database is managed by a trusted routing authority that acts as an intermediary between service providers. This architecture improves routing accuracy by maintaining a comprehensive, centralized view of network topology and routing information, while the token-based interaction model keeps system complexity manageable through standardized, simplified communication protocols.
Data Source
AI summary
The present invention describes how a trusted network routing authority, such as a VoIP inter-exchange carrier or clearinghouse can provide routing and secure access control across multiple network domains with a single routing and admission request. This technology can improve network efficiency and quality of service when an Internet Protocol (IP) communication transaction, such as a Voice over IP (VoIP), must be routed across multiple devices or administrative domains. This technology defines the technique of performing multiple route look-ups at the source of the call path to determine all possible routes across intermediate domains to the final destination. The VoIP inter-exchange carrier or clearinghouse then provides routing and access permission tokens for the entire call path to the call source.