Selective Voice Data Recording in PTT Systems
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Solution Overview
Problem
Current Push to Talk over Cellular (PTT) services cannot record voice data during calls, making it difficult for users and operators to retain important communication content for decision-making or supervision.
Innovation Solution
A system and method that includes a voice data recording node and a data storing node to acquire, generate, and store voice data records from PTT calls, with filtering conditions allowing selective recording and secure access, using an agent gateway for external interaction and management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all call contents are recorded, then complete recording coverage is achieved, but storage space is excessively consumed
Solution Approach 1:
The patent extracts and records only the essential voice data from complete call contents by implementing selective recording based on filter conditions. The PTT server filters call contents according to predefined conditions (such as specific users, groups, time periods, or call types) and records only the filtered voice data, thereby achieving reliable recording coverage for important calls while significantly reducing storage space consumption.
2Loss of information
If voice data is recorded without filtering, then all call contents are preserved, but storage efficiency decreases
Solution Approach 1:
The patent applies local quality by implementing different recording strategies for different call contents based on filter conditions. Instead of uniformly recording all calls, the system selectively records voice data that meets specific criteria (such as calls involving important users, calls during specific time periods, or calls of particular types), thereby preserving essential information while optimizing storage efficiency through differentiated handling of call data.
3Ease of operation
If call contents are made accessible for searching, then user convenience is improved, but data security risks increase
Solution Approach 1:
The patent introduces an intermediary mechanism through the PTT server that mediates between search convenience and data security. The server implements acquiring conditions that control who can search and retrieve recorded voice data. Users must meet specific conditions (such as authorization levels, relationship to the call participants, or approval from administrators) to access recorded calls, thereby enabling convenient searching for authorized users while preventing unauthorized access and data leakage through the intermediary control layer.
Data Source
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AI summary
Embodiments of the present invention provide a system for recording voice data in a half-duplex communication. The system includes a voice data recording node and a data storing node; the voice data recording node generates a voice data record according to voice data received from a server and managing the data storing node, and the data storing node stores the voice data record. Correspondingly, a function of sending the voice data to the voice data recording node is added in the server. The system further includes an agent gateway. A user or an operator defines a filtering condition, defines an acquiring condition and searches for voice data via the agent gateway, and the filtering condition and the acquiring condition are stored by the voice data recording node. The voice data recording node connects to the agent gateway via an external searching interface and a management interface. Embodiments of the present invention further provide a method and apparatuses for recording voice data by using the above system. In the method, voice data records according to a filtering condition are recorded and the user or the operator may also search for the voice data records.