Abstract: Mobile communication terminals comprising a processor unit, a microphone, and a sound processing module for processing sounds captured by the microphone. The processor unit is configured to operate the terminal for a push-to-talk communication with at least one other mobile communication terminal via the communication network, and to operate the terminal during said push-to-talk communication in a latency state or in an active state in which sound captured by the microphone is processed by the sound processing module and sent to the at least one other mobile communication terminal. The processor unit is also configured to change from the latency state to the active state in dependence of the sound captured by the microphone.

Abstract: The invention relates to controlling the equalizer in a mobile communication terminal, advantageously a mobile phone. According to the invention, the communication terminal includes means for decreasing the frequency selective attenuation by the equalizer when a maximum amplification by the amplifier has already been reached in order to increase the volume of the sound reproduced by the loudspeaker.

Abstract: Mobile communication terminals comprising a processor unit, a microphone, and a sound processing module for processing sounds captured by the microphone. The processor unit is configured to operate the terminal for a push-to-talk communication with at least one other mobile communication terminal via the communication network, and to operate the terminal during said push-to-talk communication in a latency state or in an active state in which sound captured by the microphone is processed by the sound processing module and sent to the at least one other mobile communication terminal. The processor unit is also configured to change from the latency state to the active state in dependence of the sound captured by the microphone.

Abstract: The invention concerns a method of sending an emergency message, particularly the improvement of such methods. It is known in the state of the art to automatically transmit emergency messages to a remote station in case of an emergency situation, and/or an attempt is made to establish voice contact with the persons who are affected by the emergency. Since it is possible that the sound detection devices 17 and/or the sound emission devices 12 are damaged during an emergency situation, eliminating at least partially any advantageous communication with the remote station, the need exists to provide a method which uses any devices that are still operative after an emergency to optimally receive a communication. This objective is achieved in that after the emergency a test is performed to find out if at least one sound detection device 17 and/or at least one sound emission device 12 is still able to operate, and the result of the test is transmitted to the remote station in addition to the emergency message.