PBX Shared Line Privacy Mechanism
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Solution Overview
Problem
Existing call processing systems in shared line communication systems do not provide privacy for callers and called parties until after the call is answered, allowing call information to be visible to all devices during ringing and allowing others to join the call by picking up shared line devices, even after answering.
Innovation Solution
A privacy mechanism is implemented in the PBX system that allows users to dynamically configure private contacts, ensuring that calls from marked numbers only alert and display information to the designated user's device, and the caller can opt to make a call private on a per-call basis, controlling which device receives the call.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the Privacy button is pressed after the call is answered, then call information is suppressed for other devices, but call information is visible to all devices during the ringing period
Solution Approach 1:
The system performs preliminary action by evaluating privacy configurations before the call is answered. When a call arrives at the shared line, the PBX system checks the caller ID against pre-configured privacy settings for each device before routing the call, thereby preventing call information from being displayed on devices that should not receive the call in the first place.
2Loss of information
If the Privacy button is pressed after the call is answered, then media stream is cut off to other devices, but other devices can still join the call by picking up
Solution Approach 1:
The system performs preliminary action by pre-configuring privacy settings that determine which devices should receive calls from specific callers. The PBX system evaluates these configurations before call connection is established, ensuring that calls are routed only to authorized devices before the call even begins, thereby preventing unauthorized devices from joining.
3Ease of operation
If call information is displayed on all shared line devices, then all users can see incoming calls, but user privacy is compromised when one user answers a call
Solution Approach 1:
The system applies local quality by providing different call routing behavior for different devices based on their individual privacy configurations. Each device on the shared line can have its own privacy settings that determine whether it should receive calls from specific callers, allowing personalized privacy control while maintaining overall system functionality.
Data Source
AI summary
A PBX system with a shared line connected to a plurality of telephone devices includes one or more processors that control a connection for an incoming call from a caller, the one or more processors being operable to access a listing that includes one or more callers or calling numbers designated as private to a first telephone device. The one or more processors being further operable to send an alert to only the first telephone device in the event that the one or more callers or the calling numbers in the listing includes a caller or calling number associated with the incoming call. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.