Media Gateway Bypass Core Network via Cluster Attributes
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Solution Overview
Problem
In decomposed voice over packet architectures, call control elements are unaware of alternate bearer possibilities between endpoints on different media gateways, limiting the ability to establish calls directly between them without using the core network.
Innovation Solution
Media gateways exchange cluster attributes during call setup to identify and utilize alternate bearer possibilities, allowing calls to be established directly between them, thereby bypassing the core network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If call control elements use conventional routing through the core packet network, then calls can be established between endpoints on different media gateways, but network load increases and service complexity increases
Solution Approach 1:
The patent segments the call establishment process into two phases: initial call setup through the core network (handled by external call control), and subsequent media path optimization (handled by direct media gateway communication). This allows the system to maintain reliability for call establishment while reducing network load for actual media transport by bypassing the core network once alternate bearers are identified.
Solution Approach 2:
The patent introduces cluster attributes as an intermediary mechanism that carries information about alternate bearer possibilities between media gateways. These attributes act as a mediator that enables direct communication paths without requiring the external call control element to have complete knowledge of all possible connections, thus reducing core network load while maintaining call establishment capability.
2Ease of operation
If external call control elements are unaware of alternate bearer possibilities, then system architecture remains simple and standardized, but ability to establish direct calls between media gateways is limited
Solution Approach 1:
The patent applies preliminary action by pre-configuring cluster attributes in media gateways that contain information about alternate bearer possibilities before calls are established. This allows media gateways to independently determine direct connection opportunities without requiring real-time knowledge from external call control elements, improving routing efficiency while the standardized attribute format maintains architectural simplicity.
Solution Approach 2:
The patent enables media gateways to perform self-service by autonomously analyzing cluster attributes to determine alternate bearer possibilities and establishing direct calls without external control intervention. This self-determination capability improves call routing efficiency while the use of standardized cluster attributes prevents information loss about bearer possibilities.
3Productivity
If media gateways exchange cluster attributes during call setup, then alternate bearer possibilities can be identified and utilized, but call setup procedure becomes more complex
Solution Approach 1:
The patent merges the cluster attribute exchange process with the existing call setup signaling procedures. By integrating alternate bearer information exchange into standard call setup messages rather than creating separate communication protocols, the system identifies and utilizes alternate bearers to improve call establishment speed while minimizing the increase in procedural complexity through reuse of existing signaling frameworks.
Data Source
AI summary
A method and system for establishing a call between two endpoints residing on different media gateways in a decomposed voice over packet architecture. Cluster attributes identifying alternate bearer possibilities are exchanged between media gateways as part of capabilities negotiation which occurs during call setup conducted by an external call control element over a core network. The media gateways analyze the cluster attributes to determine whether bearer possibilities exist apart from the core network. If an alternate bearer possibility exists, the alternate is employed and the call is established via the alternate bearer directly between the media gateways, thus bypassing the core network.