Measurement Based Call Quality Reporting

Real-time traffic is an important issue when designing networks. The growth in the deployment of voice applications in packet switched networks requires that the network can deliver such traffic with a minimum quality. At the same time, customers want guaranties that the proper Quality of Service is provided for their contracted services. In this environment service providers need means of reporting the quality level of their networks. Standardisation bodies define general metrics, such as delay, jitter or losses without giving detailed information regarding the actual user's perception of the traffic. Other approaches such as the Mean Opinion Score (MOS), are too coarse to be significant on best-effort based environments such as the Internet.