Telematic Control Unit tcu
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The Telematic Control Unit TCU is optional equipment in US vehicles. This means that an emergency call can always be made (if the car is equipped with the TCU), also if the customer has not (yet) retrofitted a telephone.
The range of functions of the US version is as follows:
^ TCU is always fitted in order to ensure the emergency call can be made even if no telephone is present
^ Dualband 800 MHz and 1900 MHz
^ Combined transmit/receive module NAD (Network Access Device) for analog AMPS (American Mobile Phone Standard) for telephone calls and digital CDMA (Code Division Multiplex Algorithm) for telematics functions
^ Eject box with charging unit for Motorola Phoenix V60
^ Telematics functions (E/B call)
^ GPS receiver for localization