Sevana VQM Voice Quality Monitoring is an active call quality monitoring system
Use it to enable end-to-end call quality analysis and monitoring to detect and investigate QoE and QoS related issues. VQM server combines the force of audio waveform analysis using AQuA and PVQA technologies with continuous network monitoring.
The VQM feature gives information about the voice quality metrics related to media (voice) quality. With VQM, you can monitor & diagnose voice quality issues on your VoIP network.