PBX Audio Quality Adjustment via Integrated Databases
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Solution Overview
Problem
Existing telephone systems with hybrid PBX and VoIP functions require external devices for automatic voice quality adjustment, leading to equipment investment and complex maintenance, necessitating professional engineers for optimal voice call quality settings.
Innovation Solution
A private branch exchange (PBX) with integrated audio quality characteristic and connection path databases allows for automatic adjustment of gain and echo canceller circuits based on telephone and line types, enabling optimal voice call quality without external devices, using a voice quality adjusting method and program that sets audio quality adjustment values dynamically during calls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If an external device is installed for automatic voice quality adjustment, then voice quality can be automatically optimized, but equipment investment and maintenance complexity increase
Solution Approach 1:
The patent merges the voice quality adjustment function with the PBX system by integrating the audio quality characteristic configuration database and automatic adjustment mechanism directly into the PBX. This eliminates the need for separate external devices while maintaining automatic voice quality optimization capabilities.
Solution Approach 2:
The PBX system is enhanced to perform multiple functions including call switching, audio quality measurement, and automatic parameter adjustment. The audio quality characteristic configuration database stores adjustment values for different telephone and line type combinations, enabling the PBX to universally handle various connection scenarios without external specialized equipment.
2Manufacturing precision
If professional engineers perform manual adjustment of gain circuits and echo cancellers, then optimal voice call quality can be achieved, but maintenance time and labor costs increase
Solution Approach 1:
The PBX system performs self-adjustment of audio quality parameters by automatically measuring voice call characteristics and applying pre-configured adjustment values from the audio quality characteristic configuration database. This eliminates the need for professional engineers to manually adjust gain circuits and echo cancellers for each connection scenario.
Solution Approach 2:
The audio quality characteristic configuration database pre-stores optimal adjustment values for gain circuits and echo cancellers corresponding to different telephone and line type combinations. These pre-configured values are automatically applied when new connections are established, eliminating the need for real-time manual adjustment by professional engineers.
3Adaptability or versatility
If multiple gain circuits and echo canceller circuits are used for different connection paths, then voice call quality can be adjusted for various scenarios, but the difficulty of determining optimal circuits increases
Solution Approach 1:
The patent applies different audio quality adjustment values specific to each combination of telephone type and line type through the audio quality characteristic configuration database. This allows optimal circuit selection and parameter adjustment tailored to local connection characteristics, making the determination of optimal circuits straightforward through database lookup rather than complex analysis.
Data Source
AI summary
Provided is a private branch exchange capable of independently adjusting call voice level and call quality according to a connection type of a communication line or a telephone. The private branch exchange includes an audio quality characteristic configuration DB (116) for storing audio quality adjustment values of gain circuits (112 and 122) and an echo canceller circuit (121) for which optimal call quality can be obtained according to a combination for each group of telephone type and line type to connect for a telephone call, and a connection path DB (117) for storing information related to a connection path determined by a combination of a telephone and a communication line to connect for the telephone call, in which if there is a connection request from the telephone or the communication line, the connection path DB (117) is referred to obtain, by referring to the audio quality characteristic configuration DB (116), audio quality adjustment values to be set for the gain circuits (112 and 122) and the echo canceller circuit (121) which exist on the connection path that is determined, to perform settings for the gain circuits (112 and 122) and the echo canceller circuit (121).