METHOD OF DETERMINING THE QUALITY OF VOICE DATA WITH TRANSMISSION VIA A NETWORK, METHOD OF AND AN APPARATUS FOR PERFORMING A TELEPHONE CALL

摘要

A method of determining the quality of transmitted voice data is disclosed, in particular of speech data transmitted during a telephone call, wherein the voice data are transmitted via a network, and that method includes:- providing voice data at a transmitter side in a first data format,- providing a first test signal in the first data format,- combining the voice data and the test signal to form input data,- transmitting the input data in a transmittal data format,- receiving the transmitted input data at a receiver side to obtain output data,- removing at least portions of a data packet in the output data or of a data packet derived therefrom in order to derive a second test signal,- analysing the derived second test signal by applying a predetermined analysis criterion in order to obtain at least one value for a quality indicator.