IMS Client Default Dialling Plan Identity Configuration
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Solution Overview
Problem
Users of IP Multimedia Subsystem (IMS) networks must manually provide or have preconfigured phone context information for TEL Uniform Resource Identifiers (URIs) to make calls, which is inconvenient and error-prone, especially when using terminals from different geographical locations or borrowing devices.
Innovation Solution
The IMS core provides a default dialling plan identity to user terminals during registration, allowing the IMS client to automatically include the necessary phone context in TEL URIs for call setup requests, eliminating the need for user input or preconfiguration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If users manually provide or preconfigure phone context information for TEL URIs, then call routing accuracy is improved, but user convenience and ease of operation deteriorates
Solution Approach 1:
The terminal automatically obtains and uses the default dialling plan identity without requiring user input. The system self-configures the phone context information by retrieving it from network information or pre-stored data, eliminating the need for manual user configuration while ensuring accurate call routing.
Solution Approach 2:
The terminal pre-obtains the default dialling plan identity either from network information during registration or from pre-stored information in the terminal. This preliminary configuration of phone context information eliminates the need for real-time user input during call setup, improving both accuracy and convenience.
2Reliability
If users preconfigure phone context information, then call setup reliability is improved, but device complexity and configuration complexity increases
Solution Approach 1:
The terminal automatically manages the phone context information by obtaining the default dialling plan identity from network information or pre-stored data. This self-configuration approach ensures reliable call setup while minimizing configuration complexity for users and operators.
Solution Approach 2:
The terminal is designed to handle multiple sources of default dialling plan identity (network information and pre-stored information) and can adaptively select between them. This multi-functional capability ensures reliable call setup across different scenarios without increasing configuration complexity.
3Adaptability or versatility
If terminals use home dialling plan regardless of location, then adaptability and ease of operation are improved, but network management complexity increases
Solution Approach 1:
The terminal dynamically selects the appropriate default dialling plan identity based on available information sources. When network information is available, it uses that; otherwise, it falls back to pre-stored information. This dynamic adaptation enables location-independent operation while managing network complexity through standardized procedures.
Solution Approach 2:
The patent introduces an intermediary mechanism where the terminal obtains default dialling plan identity from network information during registration. This intermediary approach allows the network to provide location-appropriate dialling plans while maintaining user adaptability, balancing versatility with network management complexity.
4Measurement precision
If manual configuration of dialling plan is required, then measurement precision of phone context is improved, but time consumption and productivity deteriorates
Solution Approach 1:
The terminal pre-obtains the default dialling plan identity either from network information during initial registration or from pre-stored information. This preliminary configuration ensures accurate phone context is available immediately when needed, eliminating manual configuration steps and accelerating call setup while maintaining precision.
Solution Approach 2:
The terminal automatically configures accurate phone context information by obtaining the default dialling plan identity without user intervention. This self-service approach ensures measurement precision of phone context while eliminating the time consumption associated with manual configuration, thereby improving productivity.
Data Source
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AI summary
A method of installing a default dialling or numbering plan identity into a user terminal comprising an IMS client. The method comprises, at or following registration of a user of the user terminal to an IMS network, receiving at the terminal from the network a dialling or numbering plan identity and saving the identity as a default identity at the terminal, wherein the default dialling or numbering plan identity is subsequently used by the IMS client as a phone context.