Bluetooth telephone system is a mobile communication system based on Bluetooth technology and PSTN.

蓝牙电话系统是基于蓝牙技术和现有固定电话网络的一种移动通信系统。

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In addition to audio streaming, built-in Bluetooth allows for voice dialing of telephone numbers from most smartphones with the voice-dialing feature.

ENGADGET: Kenwood announces four new in-car multimedia receivers: connects through Bluetooth to most smartphones