The ISO26 or ISO part of Carmedia is a car-coupling interface with various transfer and connection functions. It is a digital interface which is used to connect amultimedia system, like a car multimedia navi-system, to cars, trucks, and other vehicles. This interface is based on the ISO26/ISO 8058 standard. It is used to provide connection between audio-video devices, like DVD players, amplifiers and monitors, to a car. It also enables communication between a car and a multimedia device. It also includes a power module, which is responsible for the control and transfer of power to the car. In addition, it can be used to connect navigational systems, speakers, alarms, phones, and other accessories.