Telephone Number Resolution via Switched Network Signaling
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Solution Overview
Problem
Current methods for determining the IP domain associated with a public or private telephone number are either expensive, lack direct association between domains, or pose scalability and security risks, particularly in large-scale deployments.
Innovation Solution
A method where a client device in the originating domain places a call to a destination device via a switched telephone network, allowing the destination domain to send a stream containing an identifier for reaching the destination domain via an IP network, eliminating the need for publishing telephone numbers or number/IP address pairs, and enabling global coverage without additional infrastructure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If ENUM database technique is used to resolve telephone numbers, then telephone number to IP domain association is achieved, but operational management cost increases and database maintenance effort is required
Solution Approach 1:
The patent enables domains to autonomously publish their telephone number associations and handle their own resolution requests without requiring centralized database management. Each domain maintains its own routing information and can independently resolve telephone numbers by querying other domains directly, eliminating the need for centralized ENUM database maintenance while achieving the same association functionality
Solution Approach 2:
The patent divides the centralized ENUM database functionality into distributed domain-level operations. Instead of one centralized database, each IP domain maintains its own routing information and handles its own telephone number resolutions independently, segmenting the monolithic database function into multiple autonomous units that reduce operational complexity
2Reliability
If VIPR technique is used for telephone number resolution, then security is enhanced through authentication, but system complexity and scalability issues arise in large-scale deployments
Solution Approach 1:
The patent extracts the complex authentication and ticket validation mechanisms from the resolution process. Instead of requiring full VIPR authentication flows, the patent uses simplified domain-based trust relationships where domains authenticate each other through standardized interfaces, retaining security while removing the cumbersome authentication overhead
Solution Approach 2:
The patent creates a universal resolution mechanism that works across different domain types and scales without modification. The standardized domain interaction model allows the same resolution process to function whether there are a few domains or thousands, providing both security and scalability through a unified approach that doesn't require complex case-by-case authentication
3Loss of information
If routing based on telephone number ranges is used, then direct association between origin and destination domains is achieved, but operational management becomes expensive
Solution Approach 1:
The patent performs preliminary routing information setup at domain configuration time rather than requiring ongoing operational management. Domains pre-publish their telephone number associations and routing information, allowing direct domain association to be achieved through预先 configured data that requires minimal ongoing operational intervention
Solution Approach 2:
The patent implements feedback mechanisms where domains automatically update and synchronize their routing information based on resolution outcomes. This allows direct domain association to be maintained through automated information exchange rather than expensive manual operational management, with domains learning from and adapting to each other's routing data
Data Source
Figure 1
AI summary
The invention relates to a method of resolution by an IP domain, termed the original domain (A), of the public or private telephone number of a client device, termed the called party, belonging to an IP domain, termed the destination domain (B). Said method, is noteworthy in that it comprises the following steps: a) any client device, termed the caller, belonging to said original domain (A) places a telephone call to said telephone number; b) said telephone call is transmitted to said destination domain (B) via a switched telephone network (2) on the basis of said telephone number; and c) unless advised to the contrary by the destination domain and/or the called party, the destination domain (B) despatches to said original domain (A) a stream of said switched telephone network (2) containing at least one identifier that makes it possible to reach the destination domain via an IP network (1).