Multi-agent system for monitoring the quality of speech in computer networks

The paper deals with speech quality monitoring system using probes placed on individual network nodes operating VoIP (Voice over Internet Protocol) services. The system is developed mainly within research of the Czech educational and scientific network, but the tool can be deployed generally in any VoIP infrastructure. In order to assess speech quality, an intrusive measurement approach has been applied and results from probes are instantly collected on a central server. Information on speech quality is visualized in a graph respecting topology of probes. In the article, we provide an overall description of the technology and algorithms used in the speech quality monitoring system and results achieved in this applied research were verified in real operation. Contribution of the work lies in the new proposed multi-agent system enabling speech quality monitoring and its verification in Czech academic network.