HANDS-FREE TELEPHONE (HF/TEL) SYSTEM CONSTRUCTION

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• Consists of the following parts.

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• Communication between the Bluetooth-enabled mobile phone and the HF/TEL unit is performed via radio waves. The frequency range is 2.4 GHz, and transmission is possible within an approx. 10 m (32 ft) area.
• Transmission between the HF/TEL unit, the center panel unit is performed via the CAN system.
• The center panel unit outputs the signals from the HF/TEL unit to the speaker (without Bose®) or the audio amplifier (with Bose®).
• The vehicle’s microphone is connected to the HF/TEL unit. The HF/TEL unit sends the voice spoken into the vehicle’s microphone to the Bluetooth-enabled mobile phone.