VoIP Call Setup via DVB Broadcast Network Fallback
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Solution Overview
Problem
Existing VoIP communication systems fail to establish connections when the called terminal is disconnected from the IP network, as they require both terminals to be online, leading to service limitations for users with 'online time based charge' modes.
Innovation Solution
A method and system that utilize a digital video broadcasting front-end server to convert VoIP call requests into digital video signals, allowing broadcasting within the digital video broadcasting network, enabling VoIP communication even when the called terminal is offline by enabling IP connection automatically upon receiving the call request.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the terminal is disconnected from the IP network to reduce service charges, then operational cost is reduced, but VoIP communication cannot be established
Solution Approach 1:
The patent introduces a DVB front-end server as an intermediary that receives VoIP call requests and broadcasts them through the DVB network. This mediator enables offline terminals to receive calls without IP network connection, resolving the contradiction between reducing service charges and maintaining communication reliability.
Solution Approach 2:
The patent transitions from purely IP network-based VoIP communication to a dual-path system that incorporates DVB broadcast network. By adding this new dimension (DVB network), the system enables terminals disconnected from IP network to still receive VoIP calls, thus maintaining reliability while allowing cost reduction.
2Reliability
If both terminals must be online to establish VoIP communication, then communication reliability is ensured, but service accessibility is limited
Solution Approach 1:
The patent makes the communication system dynamic by allowing terminals to switch between online (IP network) and offline (DVB network) modes. The system adapts its behavior based on terminal connectivity status, enabling flexible service accessibility while maintaining communication reliability through the DVB broadcast mechanism.
Solution Approach 2:
The DVB front-end server provides universal service by handling VoIP call requests for both online and offline terminals. This multi-functional approach ensures that the system can serve diverse user scenarios (online, offline, partial connection) while maintaining reliable communication establishment.
Data Source
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AI summary
The present inventiondiscloses a method and system for establishing VoIP communication by means of digital video broadcasting network. The methodcomprises: a first terminal sending a VoIP call request to a source VoIP server to which the first terminal belongs, the VoIP callrequest containing an address of a second terminal; the source VoIP server forwarding the VoIP call request to a destination VoIP server to which the second terminal belongs; the first terminal or any one of VoIP servers in a forwarding path from the source VoIP server to the destination VoIP server forwarding the VoIP call request to a digital video broadcasting front-end server; the digital video broadcasting front-end server converting the VoIP call request into a call request modulated in digital videosignals and broadcasting it within the digital video broadcasting network.The method and system for establishing VoIP communication by means of digital video broadcasting network according to the present invention can receive the VoIP call and accordingly establish the VoIP communication even if the terminal, for example a DVB/IP combo set-top-box, is disconnected to the IP network. Moreover, the present invention can be implemented conveniently and has lower cost.