VOIP Telephony Termination via Data Network Routing
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Solution Overview
Problem
Mobile users incur exorbitant roaming charges when using cellular services outside their native service area, particularly for international calls, due to premium rates negotiated between carriers.
Innovation Solution
A system and method that utilizes a Voice over Internet Protocol (VOIP) telephony system to terminate telephony communications, allowing calls to be routed through a data network instead of traditional cellular channels, thereby avoiding roaming fees. This involves a forwarding connection unit that registers mobile devices with a VOIP service, assigns a forwarding access number, and implements call forwarding instructions to route calls through a data connection using SIP protocol.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional cellular service is used outside native service area, then telephony communication is available, but exorbitant roaming charges are incurred
Solution Approach 1:
The patent introduces a VOIP system as an intermediary between the caller and the mobile device. Instead of routing calls through traditional cellular networks in roaming areas, the system uses a VOIP gateway to terminate calls and forward them to the mobile device, thereby avoiding roaming charges while maintaining communication availability
Solution Approach 2:
The patent replaces the traditional cellular telephony mechanism with a data network-based VOIP mechanism. By substituting the cellular radio interface with internet protocol communication, the system eliminates the need for expensive roaming agreements and reduces communication costs
2Loss of energy
If VOIP system is used to terminate calls, then roaming charges are reduced, but system complexity increases
Solution Approach 1:
The patent makes the mobile device multi-functional by enabling it to operate both as a traditional cellular device and as a VOIP endpoint. The device can automatically select the appropriate communication path (cellular or VOIP) based on location and cost considerations, reducing overall system complexity through unified device capability
Solution Approach 2:
The system implements automatic call routing where the mobile device or network automatically determines whether to use cellular or VOIP pathways without requiring manual user intervention. This self-service mechanism simplifies operation despite the underlying system complexity
Data Source
AI summary
Systems and methods for terminating telephony communications to a mobile telephony device via a data network make use of a forwarding termination service. The forwarding termination service causes a native mobile telephony service provider that provides service to the mobile telephony device to forward incoming telephony communications directed the native telephone number of the mobile telephony device to a forwarding access number. The forwarding termination service receives telephony communications directed to the forwarding access number, and then terminates the telephony communications to the mobile telephony device via any one of multiple different methods. The mobile telephony service provider can be instructed to implement and cancel call forwarding instructions by a forwarding agent that is separate from the forwarding termination service.