S-CSCF Access to Customer Premise PBX Service Logic

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing customer premise Public Branch Exchanges (PBXs do not support an interface to communicate local service logic and data to a service provider network, preventing the integration of network-based service features with customer premise-based PBX service features, especially in Fixed Mobile Convergence solutions.

Innovation Solution

A method and apparatus enable customer premise PBX service feature processing in a service provider network by allowing access to customer premise IP PBX-based service logic and data through a Serving Call Session Control Function (S-CSCF) network element, using an Application Server interface between the service provider network and the customer premise PBX, without relinquishing control of the bearer path.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If customer premise PBXs use traditional interfaces, then device complexity is reduced and ease of operation is maintained, but service feature integration with service provider network is prevented

Engineering Contradiction:

Improveservice feature integrationVSAvoidinterface complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent introduces an Application Server interface as an intermediary component that mediates between the customer premise PBX and the service provider network. This interface enables service feature integration by allowing the PBX to communicate service logic and data to the network without requiring complex modifications to the PBX itself, thus resolving the contradiction between integration capability and device complexity

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The Application Server interface provides universal functionality by enabling multiple service features to be integrated through a single standardized interface. This multi-functional approach allows the PBX to access various service provider network features without requiring separate interfaces for each feature, thereby improving adaptability while maintaining manageable complexity

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Loss of information

If bearer path is hairpinned through PBX for service feature access, then service logic and data can be retrieved, but bandwidth efficiency deteriorates

Engineering Contradiction:

Improveservice logic and data accessVSAvoidbandwidth efficiency

Core Design Contradiction:

Loss of informationVSLoss of energy

Solution Approach 1:

The patent extracts the service logic and data retrieval function from the bearer path by using the Application Server interface. Instead of hairpinning the entire bearer path through the PBX, only the necessary service logic and data are extracted and transmitted through the interface, while the main bearer path remains efficient and direct, thus resolving the contradiction between information access and bandwidth efficiency

Inventive Principle:

Principle #2Taking out (Extraction)

3Adaptability or versatility

If service provider network accesses PBX service features, then service experience integration is improved, but control of bearer path may be relinquished

Engineering Contradiction:

Improveservice experience integrationVSAvoidbearer path control

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent segments the communication functions by separating service feature access from bearer path control. The Application Server interface handles service logic and data exchange independently, while the bearer path control remains with the service provider network. This segmentation allows service experience integration without compromising bearer path control, resolving the contradiction between adaptability and reliability

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS9036627B2Method and apparatus for enabling customer premises public branch exchange service feature processing

Publication Date: 2015.05.19 AT&T INTELLECTUAL PROPERTY I L P

AI summary

A method and apparatus for enabling customer premise Public Branch eXchange (PBX) service feature processing to be performed in a service provider network are disclosed. For example, the method receives a signaling message associated with a user, and accesses a customer premise Internet Protocol (IP) Public Branch eXchange (PBX) to retrieve customer premise IP PBX based service logic and data associated with the user by a Serving Call Session Control Function (S-CSCF) network element. The method then completes a service feature associated with the service logic and data in the communication network.