Monitoring voice over internet protocol (VolP) quality during an ongoing call

摘要

A method for calculating a mean opinion score (MOS) during an ongoing Voice over Internet Protocol (VoIP) call is provided. The method may include determining a time delay between a VoIP source and a VoIP destination connected by a communications network. A start recording message is sent from the VoIP source to the VoIP destination. A first recorded call sample from the VoIP source and a second recorded call sample from the VoIP destination are generated, whereby the first and the second recorded call sample are generated with a recording delay value corresponding the determined time delay for synchronizing the first and the second recorded call sample. Using an intrusive call quality measurement, a first MOS value is calculated based on the first and the second recorded call sample. Using a non-intrusive call quality measurement, a second MOS value is calculated based on the first MOS value.

主权项

1. A method for calculating a mean opinion score (MOS) during an ongoing Voice over Internet Protocol (VoIP) call, comprising:
determining a time delay between a call sender at a first location on the communications network and a call receiver at a second location on the communications network; receiving a recorded first portion of the VoIP call signal originating from the call sender; receiving a recorded second portion of the VoIP call signal originating from the call receiver, the recorded first portion synchronized with the recorded second portion to correspond to a common call segment associated with the VoIP call between the call sender and the call receiver; applying an intrusive call quality measurement to the recorded first and the recorded second portion that are synchronized, and generating an output corresponding to the intrusive call quality measurement; and applying a non-intrusive call quality measurement based on receiving the output corresponding to the intrusive call quality measurement and the received time delay; wherein the synchronizing the first recorded first portion with the recorded second portion comprises:
sending a start recording message from the call sender to the call receiver;initiating the recording of the recorded first portion of the VoIP call signal originating at the call sender when the start recording message is sent from the call sender to the call receiver; andinitiating the recording of the recorded second portion of the VoIP call signal at the call receiver based on the start recording message being received at the call receiver.