Web Telephone Call Handover Through Dual P2P Paths

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Solution Overview

Problem

Existing IP telephony systems do not provide a seamless mechanism for transferring or 'taking over' an ongoing call from a callee to a designated take-over terminal, which is crucial in business scenarios.

Innovation Solution

A WEB telephone system and server device that facilitate establishing direct peer-to-peer (P2P) paths between calling, called, and take-over terminals, enabling smooth call transfer through a signaling server and notification server, without requiring special IP phone applications on all devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If IP telephone application is installed in devices for IP telephony, then compatibility with various IP phones is achieved, but storage capacity of the device is wasted

Engineering Contradiction:

Improvecompatibility with various IP phonesVSAvoidstorage capacity

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent introduces a WEB server as an intermediary that hosts the IP telephone application and provides it on-demand to calling devices. The calling device accesses the application through a web browser without permanent installation, while the called device installs the application locally for receiving calls. This mediator approach enables compatibility without requiring all devices to permanently store the application.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Quantity of substance

If IP telephone application is downloaded and installed only when needed, then storage capacity is saved, but call takeover function cannot be provided

Engineering Contradiction:

Improvestorage capacityVSAvoidcall takeover function

Core Design Contradiction:

Quantity of substanceVSAdaptability or versatility

Solution Approach 1:

The patent applies local quality by installing the IP telephone application only on the called device where it is needed for call management functions including takeover. The calling device uses a web browser-based interface that does not require installation. This selective installation approach enables call takeover functionality while minimizing storage requirements across the system.

Inventive Principle:

Principle #3Local quality

3Adaptability or versatility

If multiple IP phone applications are installed to support various IP phones, then compatibility is achieved, but device complexity increases

Engineering Contradiction:

Improvesupport for various IP phonesVSAvoidnumber of applications to install

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements universality by using a single IP telephone application that can handle calls from multiple different IP phone types. The application is deployed on the called device and provides a unified interface for managing calls from various sources, eliminating the need to install separate applications for each IP phone type while maintaining broad compatibility.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12432303B2WEB telephone system, web telephone server apparatus, and computer program product storing a WEB telephone program

Publication Date: 2025.09.30 THISIS INC

AI summary

In a state where the first P2P connecting the caller and the callee and the second P2P path connecting the callee and the take-over person are established, when the callee receives a switching operation, AC information including identification information of the caller and the take-over person is transmitted to the WEB server. The WEB server transmits A-C meeting information indicating a meeting area for the calling terminal and the takeover terminal to wait in the signaling server to the called terminal which is the transmission source of the AC information. The destination node transmits the A-C meeting information to the two nodes using the first P2P path and the second P2P path.