Voice Input In Privacy Mode
During voice input in privacy mode, the TCU receives the voice information from the Bluetooth handset. (The voice information is sent in the Bluetooth standard from the Bluetooth handset to the Bluetooth antenna in the vehicle. The Bluetooth antenna is connected to the Bluetooth module on the TCU.) The incoming voice information is transferred to the TCU and transmitted to the NAD/GSM 900/1800 module. The voice information is carried as high-frequency signals via the aerial wire to the GSM antenna on the vehicle exterior. The high-frequency signals are sent by the GSM antenna to the GSM mobile phone network.