A method for assessing VoIP packet generation and transmission, comprising the steps of: a) end-point reception of a VoIP packet sequence (RXA, RXB) over an IP network link; b) end-point determination of the VoIP quality (QRXA, QRXB) of the received VoIP packet sequence (RXA, RXB) and end-point determination of the VoIP quality (QTXA, QTXB) of the VoIP packet sequence (TXA, TXB) transmitted by the end point in its function as transmitter, wherein moreover each end point (A, B) transmits the transmission signal quality (QTXA, QTXB) determined in its function as transmitter (A, B) to the other end point, wherein each end point (A, B) transmits the reception signal quality (QRXA, QRXB) determined in its function as receiver (A, B) to the respective other end point, and wherein (i) at least one end point (A, B) calculates the difference between the reception signal quality (QRXA, QRXB) determined at said end point (A, B) and the transmission signal quality (QTXB, QTXA) determined at the other end point (B, A) from the quality information determined in its function as receiver and the quality information transmitted by the respective other end point in its function as transmitter; and (ii) the at least one end point (A, B) calculates the difference between the transmission signal quality (QTXA, QTXB) determined at said end point (A, B) and the reception signal quality (QRXB, QRXA) determined at the other end point (B, A) from the quality information determined in its function a transmitter and the quality information transmitted by the other end point in its function as receiver; c) supply of the determined quality information to a quality indication, wherein the supplied quality information consists of the quality (QRXA, QRXB) of the received VoIP packet sequence (RXA, RXB), the quality (QTXA, QTXB) of the VoIP packed sequence (TXA, TXB) transmitted by the end point in its function as transmitter or a combination thereof, and both quality differences; and d) end-point indication of the quality information in real time. a) end-point reception of a VoIP packet sequence (RXA, RXB) over an IP network link; b) end-point determination of the VoIP quality (QRXA, QRXB) of the received VoIP packet sequence (RXA, RXB) and end-point determination of the VoIP quality (QTXA, QTXB) of the VoIP packet sequence (TXA, TXB) transmitted by the end point in its function as transmitter, wherein moreover each end point (A, B) transmits the transmission signal quality (QTXA, QTXB) determined in its function as transmitter (A, B) to the other end point, wherein each end point (A, B) transmits the reception signal quality (QRXA, QRXB) determined in its function as receiver (A, B) to the respective other end point, and wherein (i) at least one end point (A, B) calculates the difference between the reception signal quality (QRXA, QRXB) determined at said end point (A, B) and the transmission signal quality (QTXB, QTXA) determined at the other end point (B, A) from the quality information determined in its function as receiver and the quality information transmitted by the respective other end point in its function as transmitter; and (ii) the at least one end point (A, B) calculates the difference between the transmission signal quality (QTXA, QTXB) determined at said end point (A, B) and the reception signal quality (QRXB, QRXA) determined at the other end point (B, A) from the quality information determined in its function a transmitter and the quality information transmitted by the other end point in its function as receiver; (i) at least one end point (A, B) calculates the difference between the reception signal quality (QRXA, QRXB) determined at said end point (A, B) and the transmission signal quality (QTXB, QTXA) determined at the other end point (B, A) from the quality information determined in its function as receiver and the quality information transmitted by the respective other end point in its function as transmitter; and (ii) the at least one end point (A, B) calculates the difference between the transmission signal quality (QTXA, QTXB) determined at said end point (A, B) and the reception signal quality (QRXB, QRXA) determined at the other end point (B, A) from the quality information determined in its function a transmitter and the quality information transmitted by the other end point in its function as receiver; c) supply of the determined quality information to a quality indication, wherein the supplied quality information consists of the quality (QRXA, QRXB) of the received VoIP packet sequence (RXA, RXB), the quality (QTXA, QTXB) of the VoIP packed sequence (TXA, TXB) transmitted by the end point in its function as transmitter or a combination thereof, and both quality differences; and d) end-point indication of the quality information in real time.