Cloud-Mediated VoIP Call Signaling Without Permanent IMS Registration
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Solution Overview
Problem
Existing telecommunications systems require VoIP capable devices to be directly and permanently registered on and connected to the IMS system, limiting flexibility and functionality.
Innovation Solution
A communication system utilizing an IMS system and a cloud-based customer management system, where devices are registered on the cloud-based system, and only notified of incoming VoIP calls when necessary, allowing non-VoIP capable devices to be informed about incoming calls and enabling seamless call transfers between VoIP devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If VoIP capable devices are directly and permanently registered on the IMS system, then call establishment is reliable and straightforward, but device flexibility and functionality are limited
Solution Approach 1:
The patent introduces a cloud-based customer management system as an intermediary between the IMS system and VoIP capable devices. This mediator receives VoIP session requests from the IMS system, notifies relevant devices, and coordinates call establishment, thereby enabling flexible device registration while maintaining reliable call setup through centralized management
2Reliability
If devices are permanently connected to the IMS system, then call notifications are immediate and reliable, but energy consumption and system load increase
Solution Approach 1:
Instead of maintaining permanent connections, the system uses periodic notification mechanisms where the cloud-based customer management system actively notifies devices of incoming calls only when necessary. Devices can transition to low-power states between notifications, reducing energy consumption while maintaining reliable call notification through on-demand activation
3Adaptability or versatility
If all devices associated with a customer are notified of incoming calls, then call accessibility is improved, but device complexity and notification management become more complex
Solution Approach 1:
The cloud-based customer management system serves multiple functions: it manages device registration, handles call notification distribution, coordinates call transfers, and maintains customer-device associations. This universal management platform simplifies the overall system architecture by consolidating notification management responsibilities, thereby improving call accessibility across multiple devices without proportionally increasing complexity
Data Source
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AI summary
A method is provided using a communication system (100; 100') that comprises an IMS system (30) and a cloud-based customer management system (60, CMS) registered on the IMS system (30), the method comprising the steps of: a) Receiving, at the IMS system (30), an invite message, wherein the invite message includes an SDP offer and the address of a VoIP capable device (70); b) forwarding, by the IMS system (30), the invite message to the CMS system (60); c) Sending, by the CMS system (60), in response to the invite message a first notification message to the device (70), the first notification message including an information of an incoming VoIP call; d) Notifying, in response to the first notification message, the CMS system (60), that the device (70) is prepared to accept the incoming VoIP call; e) Forwarding, by the CMS system (60), the invite message to the device (70); f) Sending, by the device (70), a message including an SDP answer in response to the SDP offer to the CMS system (60); g) Forwarding the SDP answer, by the CMS system (60), to the IMS system (30).