Telephony Call Recovery via Network-Side Interruption Detection
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Solution Overview
Problem
Existing telephony systems fail to effectively recover calls that are unintentionally interrupted due to short network disconnections, such as those occurring in areas with low coverage or temporary interference, leading to inconvenience for users and loss of income for operators.
Innovation Solution
A system and method that includes an interrupted call data capturer and a re-connector, which captures data on call interruptions and automatically reconnects participants, thereby recovering unintentionally interrupted calls by holding connected parties on the line and attempting to reestablish the connection with disconnected parties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automatic repeat call function is installed in each mobile terminal, then call connection reliability is improved, but device complexity and service cost increase
Solution Approach 1:
The patent introduces an intermediary component (MSC server or dedicated recovery module) that acts as a mediator between mobile terminals and the network. This intermediary captures call interruption data, determines whether interruptions is intentional or unintentional, and orchestrates the recovery process, thereby eliminating the need for complex automatic repeat call functions in each terminal device while maintaining high call connection reliability
Solution Approach 2:
The system implements self-service by automatically detecting call interruptions, classifying them as intentional or unintentional, and executing appropriate recovery actions without requiring user intervention or complex terminal functionality. The network infrastructure autonomously manages call persistence, reducing device complexity
2Reliability
If call persistence service is provided through network-side components, then service coverage and reliability are improved, but network infrastructure complexity increases
Solution Approach 1:
The patent makes existing network components (MSC server, Mobile Switching Center) multi-functional by enabling them to perform both traditional switching functions and call persistence/recovery functions. This universal approach allows the same infrastructure to handle multiple tasks without proportionally increasing complexity
Solution Approach 2:
The patent merges the call persistence functionality with existing network infrastructure components rather than introducing separate dedicated systems. The call recovery module is integrated into the MSC server or network switching center, combining multiple functions into a unified system that reduces overall infrastructure complexity
3Measurement precision
If call interruption data is captured and analyzed, then call recovery accuracy is improved, but information processing requirements increase
Solution Approach 1:
The patent applies partial action by selectively processing only the necessary call interruption data required for recovery decisions, rather than analyzing all possible call parameters. The system captures minimal essential data (interruption timing, call state, network conditions) and processes only what is needed to determine intentional versus unintentional interruptions, reducing energy consumption while maintaining high detection accuracy
Data Source
AI summary
A system for recovering an unintentionally interrupted call in a telephony network includes an interrupted call data capturer and a re-connector. The interrupted call data capturer is deployable in the telephony network and configured to capture data pertaining to an interruption of the call from the telephony network. The re-connector is associated with the interrupted call data capturer and configured to use the captured data to automatically reconnect at least one unintentionally disconnected participant of the call, thereby recovering the unintentionally interrupted call.