Patent ID: 8331866

Claim:
A method for evaluating a service performance in a telecommunications system, the telecommunications system comprising a terminal equipment and a wireless packet-switched network providing a connection for said terminal, and a billing system connected to the wireless network, the method comprising the steps of: measuring data of a real-time service received by the terminal equipment, creating a log file of the measured data, sending the log file to the billing system, assessing a quality of service of the real time service based on differences between data of the real time service sent to the terminal and the received data, measuring real-time transmission packet arrival times and a number of lost real-time transmission packets of the received data in the terminal equipment, measuring from the received data of the real-time service a delay between two consecutive packets received by the terminal, adding to the log file a maximum value of measured delays between two consecutive packets received by the terminal, and modifying charging information for the real-time service in response to the assessed quality of the real time service.