Monitoring jitter and packet loss in VoIP networks using speech quality features

In VoIP services over heterogeneous networks the values of network parameters, such as packet loss rate, delay and delay jitter are generally unavailable. As a result, ensuring QoS by means of reliable call routing is impaired. In this paper we report on the development of a network conditions estimator, based on the analysis and classification of the received speech signal. The developed system was tested in a variety of network and traffic conditions. It correctly detects network conditions at an average rate of 68%.