Convergence Calling via Non-IMS Interworking Device
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Solution Overview
Problem
The integration of non-IMS and VoIP networks poses challenges in providing seamless call convergence, particularly in ensuring compatibility and reducing user charges, especially in scenarios involving international roaming and varying network access conditions.
Innovation Solution
A method and system that utilize a non-IMS network interworking device to convert call requests into roaming numbers for the VoIP network, allowing the VoIP network to initiate calls, with strategies for preferring VoIP terminals or concurrent use of VoIP and non-IMS network terminals, and implementing registration and application certification processes based on geographic location and service strategies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If call requests are forwarded from non-IMS network to VoIP network using number conversion, then call convergence capability is improved, but network complexity increases
Solution Approach 1:
The patent introduces a number conversion function that acts as an intermediary between non-IMS networks and VoIP networks. This conversion function translates calling numbers and called numbers between different network formats, enabling seamless call convergence without requiring complex direct integration between networks. The intermediary conversion mechanism simplifies the overall network architecture while maintaining adaptability.
Solution Approach 2:
The convergence call application server implements multiple functions including number conversion, call routing, and service strategy management within a single platform. This multi-functional approach reduces network complexity by consolidating various call handling capabilities into one universal system that can serve both IMS and non-IMS networks.
2Loss of energy
If VoIP network is used for international roaming calls, then call charges are reduced, but service reliability may deteriorate
Solution Approach 1:
The patent implements dynamic service strategies that can adaptively select between VoIP and traditional circuit-switched networks based on real-time conditions. The system can dynamically switch between cost-effective VoIP routing and more reliable traditional networks depending on service requirements, user location, and network status, thereby balancing cost reduction with reliability maintenance.
Solution Approach 2:
The convergence call application server incorporates feedback mechanisms that monitor call quality and network status. Based on this feedback, the system can adjust routing decisions in real-time, ensuring that calls are directed through VoIP networks when quality is acceptable and switching to traditional networks when reliability is compromised, thus maintaining service quality while optimizing costs.
3Adaptability or versatility
If multiple terminal types are supported in converged network, then service compatibility is improved, but device complexity increases
Solution Approach 1:
The patent segments the complexity management by separating terminal-specific handling from core call processing. Different terminal types (mobile phones, fixed phones, computers) are handled through standardized interfaces at the application server level, while terminal-specific protocols are managed independently. This segmentation allows the system to support multiple terminal types without proportionally increasing overall system complexity.
Data Source
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AI summary
A method for converging a call is disclosed. A non IP-Multimedia-Subsystem (IMS) network is provided with a non IMS network interworking device, by which the non IMS network is converged with a Voice over Internet Protocol (VoIP) network. The method further includes: when the non IMS network determines that a callee receiving a call request is a convergence call user, the non IMS network forwards the call request to the VoIP network; and the VoIP network initiates a call to the callee. A system for converging a call which implements the aforementioned method is further disclosed. The disclosure takes full advantage of the service characteristic of the convergence network, so as to supply users with convenient service access implementation and reduce the service charge.