PBX Extension Cloud Association via CTI Verification

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Solution Overview

Problem

Existing solutions for associating PBX extensions with cloud service applications require significant administrator involvement, leading to high operational costs, delayed user access, and potential errors or fraudulent associations, especially when dealing with simple PBX devices.

Innovation Solution

A user-device association method that sends an activation code to the end-user's cloud service account, allowing verification through a CTI connection to ensure the correct PBX extension is associated, reducing human interaction and operational costs, while preventing fraudulent use by requiring user confirmation with a local PIN code and IVR interaction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If administrator-driven association methods are used, then association security can be maintained, but operational costs increase and user access is delayed

Engineering Contradiction:
Improveassociation securityVSAvoiduser access speed
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system enables end-users to autonomously associate their own extensions with cloud service accounts without administrator intervention. Users initiate the association process, receive verification codes, and complete pairing independently, eliminating the need for administrators to manually configure each association while maintaining security through verified user identity and extension ownership.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system pre-configures extension metadata in the PBX system including user identifiers and contact information before association is needed. When a user initiates association, the system has already prepared the necessary verification data and extension details, enabling rapid automated matching and association without requiring real-time administrator input or manual data gathering.

Inventive Principle:
Principle #10Preliminary action

2Manufacturing precision

If administrator validation is required for all associations, then association accuracy is improved, but operational complexity and costs increase

Engineering Contradiction:
Improveassociation accuracyVSAvoidadministrative process complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The system implements automated feedback loops where extension metadata from the PBX system is continuously monitored and matched against cloud service account information. Verification codes are sent to users and automatically validated when entered, providing real-time feedback on association status. This automated feedback mechanism ensures accurate associations without requiring administrators to manually validate each pairing, reducing operational complexity while maintaining precision.

Inventive Principle:
Principle #23Feedback

3Ease of operation

If user-driven association methods are used, then ease of operation is improved, but risk of fraudulent association increases

Engineering Contradiction:
Improveuser association simplicityVSAvoidfraudulent association risk
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The system introduces multiple intermediary verification mechanisms between the user and the association process. Verification codes are sent through secure channels (email, SMS) as intermediaries to confirm user identity. The PBX system acts as an intermediary to verify extension ownership and metadata. CTI connection verification serves as an intermediary to confirm the user is physically present at the extension. These intermediary layers enable simple user-driven association while systematically preventing fraudulent associations by requiring multiple independent verifications.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP3603042B1Method for associating a PBX extension with a user account of a cloud service application
Publication Date: 2021.09.29 ALE INT
  • EP3603042B1 patent drawingFigure 1~2
  • EP3603042B1 patent drawingFigure 3

AI summary

A method for associating a PBX extension (21) with a user account (31), the method comprising: (S1) receiving an association request comprising a PBX extension telephone number from a user account (31), (S2) sending an association code to the user account (31), (S6) sending to the PBX central unit (22), a command to connect the PBX extension (21) to the IVR application (33), (S8) receiving through the IVR application (33), an association code from the PBX extension (21), (S10) if the association code received from the PBX extension (21) is the same as the association code sent to the user account (31) enabling the control of the PBX extension (21) from the user account (31) through the CTI link (51).