Abstract: An automatic information-collecting method and information-collecting system, which is used for the information collection of the mobile unit in a mobile network; the information-collecting system includes: a mobile unit and a information-collecting device, wherein the mobile unit has memory unit, detecting unit, and control unit, and the control unit may switch the mobile unit from a first mode to a second mode; the automatic information-collecting method includes the following steps: a). when the detecting unit detects a triggering condition, a corresponding data is stored into the memory unit; b). when the control unit detects a reporting time, the mobile unit is switched to the second mode; c). checking whether there is data in the memory unit and, if there is no data, then the mobile unit is set to the first mode; d). if data exists, then a short message is used to transfer the data to the information-collecting device, and the mobile unit is then switched to the first mode.

Abstract: Voice signal processing method and system. The communication system comprises a first communication device and a second communication device. First, second voice signals and codes corresponding thereto are stored in a second memory unit of the second communication device. Next, the first communication device transmits a first control code and a first voice signal to the second communication device. After a second voice signal corresponding to the first control code is selected from the control codes in the second memory unit, the second communication device synthesizes the first and the second voice signals to yield a third voice signal.