Abstract: A method for evaluating the processing delay of a speech signal contained in data packets received in a receiver terminal having a telephony module during a voice call to a terminal sending the data packets over a packet-switched network. The method includes the step of obtaining from the received data packets a stream of audio packets containing the speech signal. Within a predetermined decoding time, the stream of obtained audio packets is decoded and a first reconstituted speech signal is created. At least a portion of the speech reconstituted by the telephony module is duplicated to create a second reconstituted speech signal. The time difference between the first and the second reconstituted speech signals is determined. The processing delay of the speech signal in the receiver terminal is calculated from at least the determined time difference between the reconstituted first and second speech signals and the predetermined decoding time.

Abstract: A method of evaluating the processing delay of a speech signal contained in data packets received in a receiver terminal equipped with a telephony module during a voice call to a terminal sending said data packets over a packet-switched network. The method includes the step of obtaining (E32) from the received data packets a stream of audio packets containing the speech signal. Within a predetermined decoding time, the stream of obtained audio packets is decoded (E34) and a first reconstituted speech signal is created (F1). At least a portion of the speech reconstituted by the telephony module is duplicated (E36) to constitute a second speech signal (F2). The delay difference between the first speech signal (F1) and the second speech signal (F2) is determined (E39). The processing delay (D3) of the speech signal in the receiver terminal is calculated (E40) from at least the measured delay difference between said first speech signal (F1) and said second speech signal (F2) and the predetermined decoding time.

Abstract: The charge level of a battery of a mobile terminal is monitored. The terminal is switched to a previously defined economical operating mode from a normal active operating mode if (1) the charge level is less than or equal to a threshold value and (2) a user of the mobile terminal has agreed to switch to the economical operating mode.