VOIP Telephony Termination for Mobile Roaming Cost Reduction
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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 the premium rates negotiated between carriers for overseas call termination.
Innovation Solution
A system and method that utilizes a Voice over Internet Protocol (VOIP) telephony system to terminate telephony communications to mobile devices, routing calls through a data network instead of traditional cellular channels, thereby avoiding roaming fees by using Session Initiation Protocol (SIP) for signaling and establishing a data connection via a packet-based network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional cellular roaming channels are used to terminate telephony communications outside native service area, then telephony service is provided, 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 roaming channels (which incur high charges), the system uses VOIP technology with SIP protocols to establish data network connections, thereby mediating the communication path to avoid expensive roaming fees while maintaining telephony service availability
2Loss of energy
If VOIP technology is used to route calls through data network, then roaming charges are reduced, but system complexity increases
Solution Approach 1:
The patent implements a universal gateway that can handle multiple communication protocols and routing methods. The system is designed to work with both traditional cellular networks and VOIP data networks, providing multi-functionality that allows it to switch between routing methods based on cost considerations, thereby reducing roaming charges without requiring completely separate complex systems
Data Source
AI summary
Systems and methods for terminating telephony communications to a mobile telephony device that is roaming outside of its native service area make use of a forwarding termination service. The forwarding termination service causes the 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 communication 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 dialing a special character string on the mobile telephony device.