Measuring the quality of IP network services that users are experiencing and maintaining their loyalty towards these services are the most important factors that service providers consider. The existing evaluation methods for calculating the Quality of Experience (QoE) are categorized into two groups named subjective and objective. The subjective approaches are expensive and time consuming. The focus of present book is on objective measurement of QoE for network services. Это и многое другое вы найдете в книге Quality of Experience: The Case of Voice over IP (Mohammad Dalvi Esfahani,Hosein Jafarkarimi and Saman Foroutani)