Caller Identity Qualification in SIP Networks
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Solution Overview
Problem
In communication networks, particularly in SIP/IMS networks, the display of only non-certified caller identities on terminals in France leads to issues with unwanted commercial calls, as users cannot easily distinguish between reliable and unreliable callers due to the lack of certified identity presentation, making it difficult to block unwanted calls from abroad.
Innovation Solution
A method and system that provide both certified and non-certified caller identities to terminals, with additional qualification information indicating their authenticity, allowing users to differentiate between reliable and unreliable callers through visual or auditory cues, enabling users to adapt their call handling behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If only non-certified caller identities are displayed on terminals, then the device complexity is reduced and ease of operation is improved, but the reliability of caller identification deteriorates and users cannot distinguish between reliable and unreliable callers
Solution Approach 1:
The patent segments caller identities into two distinct categories: certified identities (indicating reliable callers authenticated by a trusted third party) and non-certified identities (indicating unreliable callers). This segmentation allows the terminal to display both types of identities with distinct visual indicators, enabling users to easily distinguish between reliable and unreliable callers while maintaining simple operation. The segmentation resolves the contradiction by organizing information in a way that improves reliability without complicating the user interface.
2Reliability
If both certified and non-certified caller identities are provided to terminals, then the reliability of caller identification is improved, but the device complexity increases
Solution Approach 1:
The patent introduces a trusted third party as an intermediary that certifies caller identities. This intermediary authenticates callers and provides certification information to the terminal. By delegating the authentication function to an external trusted entity, the terminal itself does not need to implement complex authentication logic, thus maintaining simple device architecture while still providing reliable caller identification. The intermediary resolves the contradiction by enabling reliability enhancement without increasing terminal complexity.
3Reliability
If certified identity is authenticated by a trusted third party, then the reliability of caller identification is improved, but the loss of information increases due to additional signaling data required
Solution Approach 1:
The patent extracts the authentication and certification functions from the terminal device and places them in a separate trusted third party system. The terminal only needs to receive and display certification indicators provided by the trusted third party, rather than implementing its own authentication logic. This extraction reduces the information processing burden on the terminal and minimizes signaling overhead, as only essential certification indicators need to be transmitted rather than complete authentication data. The extraction resolves the contradiction by enabling reliable identification while minimizing information loss.
Data Source
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Figure 3
AI summary
The present invention relates to a method for qualifying identity in a communication network, comprising the following steps: a first terminal, referred to as the caller terminal, initiates a communication to a second terminal, referred to as the called terminal; said called terminal receives, in the call signal, at least one identity of said calling terminal certified by a trusted third-party, as well as at least one non-certified identity of the calling terminal; and the called terminal presents the user thereof with information representative of at least one of said identities of the calling terminal, accompanied by an indication representative of a qualification information according to which said at least one identity of the calling terminal is or is not certified by a trusted third party.