Internetwork Call Identifier for Circuit-Packet Correlation
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Solution Overview
Problem
In telecommunications, it is challenging to determine which call detail records generated by multiple network elements relate to the same call, especially in internetwork calls involving both circuit-switched and packet-switched networks.
Innovation Solution
The use of internetwork call identifiers is introduced to uniquely identify calls across different network elements, including circuit-switched and packet-switched network elements, by incorporating these identifiers into call records and signaling messages, allowing for the correlation of records across various network elements involved in a call.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple network elements generate separate call detail records for different legs of a call, then comprehensive call information is captured, but it becomes difficult to determine which records relate to the same call
Solution Approach 1:
The patent introduces an internetwork call identifier as an intermediary element that is inserted into signaling messages between network elements. This identifier acts as a mediator that allows different network elements to associate their call detail records with the same call, resolving the complexity of correlating records across multiple network elements while maintaining complete call information
Solution Approach 2:
The internetwork call identifier serves multiple functions: it uniquely identifies calls across different network elements, enables correlation of call detail records, and works across both circuit-switched and packet-switched networks. This universal identifier simplifies the system by providing a single mechanism that handles identification across the entire internetwork
2Reliability
If traditional call identification methods are used within single networks, then call records can be correlated within that network, but records from different networks cannot be correlated
Solution Approach 1:
The internetwork call identifier is designed to work universally across both circuit-switched and packet-switched networks. It is inserted into signaling messages in a network-element-independent manner, allowing the same identification mechanism to function reliably across different network types and enabling correlation of call records throughout the entire internetwork
3Ease of manufacture
If network-specific call identifiers are used, then call records can be managed within individual networks, but integration across different network types becomes problematic
Solution Approach 1:
The internetwork call identifier serves as a mediator that bridges different network types. It is inserted into signaling messages in a standardized manner that works across both circuit-switched and packet-switched networks, allowing network elements to implement call identification without needing to understand or handle multiple different identification schemes
Solution Approach 2:
The identifier mechanism is designed to be universal, working across different network architectures and signaling protocols. This allows network elements to implement a single identification approach that maintains ease of implementation while achieving cross-network compatibility
Data Source
AI summary
A call is established between a circuit-switched network element and a packet-switched network element. A first call record is generated to record the circuit switched network element's involvement in the call, and a second call record is generated to record the packet-switched network element's involvement in the call. The first and second call records include the same call identification information to identify the call. The call identification information may include an internetwork call identifier, an identification of a carrier or service provider associated with the call, and other information that, in combination, uniquely identifies the call. The first and second call records are stored, e.g., in a centralized call record repository. Call records for a given call can be retrieved based on the call identification information for the given call.