A videoconferencing calibration system includes first and second videoconferencing components, a first codec connected with a second codec via a videoconferencing connection, and first and second controllers. The first controller is configured to control the first videoconferencing component to transmit a videoconferencing signal to the second codec, and the second controller is configured to analyze the transmitted videoconferencing signal to determine a calibration adjustment value by comparing at least one signal level value of the videoconferencing signal to a calibration target according to at least one calibration adjustment rule, and to transmit the determined calibration adjustment value to the first controller. The first controller is configured to adjust a signal level setting of the first codec according to the calibration adjustment value transmitted by the second controller.