VoIP Gateway Call Back Function Reduces Proxy Server Load
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Solution Overview
Problem
Existing VoIP systems lack a call back function for failures in receiving incoming calls, leading to increased load on proxy servers and user inconvenience, as they only define call services for outgoing call failures and not for incoming call failures.
Innovation Solution
A VoIP gateway device with a connector, communication unit, storage unit, and controller that communicates with a proxy server to provide a call back function for both outgoing and incoming call failures, using a distinct ringtone to differentiate call back calls from regular calls, thereby reducing the proxy server's load and enhancing user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the proxy server performs the call back function or its software is changed to provide call back service, then the call back function for outgoing and incoming call failures can be provided, but the load on the proxy server increases and software modification is required
Solution Approach 1:
The call back function is extracted from the proxy server and implemented in the VoIP gateway device instead. The gateway device independently handles call back operations for both outgoing and incoming call failures, freeing the proxy server from this additional load while maintaining the desired functionality.
Solution Approach 2:
The VoIP gateway device acts as an intermediary between the terminal and the proxy server. It receives call requests, determines whether call back is needed, and independently executes the call back function by sending new invite messages to the proxy server, thereby mediating the interaction and reducing proxy server burden.
2Adaptability or versatility
If the proxy server performs the call back function, then call back service can be provided, but the proxy server software must be changed which increases system complexity
Solution Approach 1:
The call back service functionality is extracted from the proxy server software and relocated to the VoIP gateway device. This eliminates the need to modify proxy server software while preserving the call back service capability for both outgoing and incoming call failures.
Solution Approach 2:
The VoIP gateway device autonomously handles the call back function without requiring external control or software changes to the proxy server. It independently determines when call back is needed and executes the necessary invite messages, making the system self-sufficient for call back operations.
3Ease of operation
If a distinct ringtone is used for call back calls, then user convenience is enhanced by distinguishing call back calls from regular calls, but additional storage and processing are required
Solution Approach 1:
A distinct ringtone is assigned specifically for call back calls, differentiating it from regular call ringtones. This local differentiation in the terminal allows users to easily identify call back calls while the actual ringtone storage remains in the terminal rather than the gateway device.
Solution Approach 2:
The ringtone for call back calls is transmitted from the VoIP gateway device to the terminal as a separate audio file or reference. The terminal then stores and plays this copied ringtone locally, allowing the gateway to provide the distinct ringtone functionality without permanently storing multiple ringtone variants.
Data Source
AI summary
Provided are a Voice over Internet Protocol (VoIP) gateway device, a control method thereof, and a VoIP gateway system. The VoIP gateway device includes: a connector which is connected to a first terminal; a communication unit which communicates with a proxy server that relays a VoIP communication; a storage unit which stores a ringtone corresponding to a call received by a call back function; and a controller which transmits an invite message to the proxy server for connecting a call from a first terminal to a second terminal corresponding to the call back function upon request from the first terminal for the call back function, and transmits the stored ringtone to the first terminal upon receiving a ringing message from the proxy server in response to the invite message.