Cross-Registration Phone Profile Overlay with Call Admission Control

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Solution Overview

Problem

When a user logs into a phone device served by a different call processing system than their home system, the visiting system lacks access to the user's preferences, preventing the overlay of phone configurations and features.

Innovation Solution

A cross-registration method that allows a local phone device to register with a remote call processing system, overlaying user preferences and configurations, enabling seamless access to features like speed dialing and emergency call routing, even when the user is geographically distant from their home system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a user logs into a phone device served by a different call processing system than their home system, then the user can access the phone device at a different location, but the visiting system lacks access to the user's preferences and cannot overlay phone configurations

Engineering Contradiction:

Improveuser access to phone device at different locationsVSAvoiduser preferences and configurations

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent introduces a home call processing system as an intermediary that stores user preferences and profiles. When a user device registers with a visiting call processing system, the home system provides the necessary user profile information and preferences to the visiting system, enabling the visiting system to overlay configurations and maintain user-specific settings without requiring direct storage of all user data at each location.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If the visiting call processing system does not have access to user preferences, then the system complexity is reduced, but the user experience and feature availability are limited

Engineering Contradiction:

Improveuser experience and feature availabilityVSAvoidsystem architecture

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent segments the call processing functionality by separating user profile storage at the home call processing system from the visiting call processing systems. This segmentation allows the visiting systems to remain relatively simple while still providing enhanced user experience through the home system's profile information and preferences being made available to them during cross-registration.

Inventive Principle:

Principle #1Segmentation

3Adaptability or versatility

If cross-registration is implemented to overlay user preferences, then user preferences are maintained across locations, but network bandwidth may be oversubscribed without call admission control

Engineering Contradiction:

Improvecross-location preference maintenanceVSAvoidnetwork bandwidth management

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent implements call admission control mechanisms that perform preliminary assessment of bandwidth availability and call requirements before allowing cross-registration and preference overlay. This preliminary action prevents network oversubscription by evaluating whether the visiting system has sufficient resources to support the user's preferences and features before completing the cross-registration process.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS8428244B2Cross-call agent extension mobility with call admission control and emergency calling

Publication Date: 2013.04.23 CISCO TECHNOLOGY INC

AI summary

A system for cross-registration of a phone device is provided. The system includes a local call processing system that stores phone device information for a local phone that is operable to be used by a user; and a remote call processing system that stores a user phone profile for the user, the remote call processing system being operable to generate a visitor registration for the local phone device. The phone device is operable to use the visitor registration to register with the remote call processing system.