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    • 3. 发明申请
    • BASE STATION SYSTEM AND MOBILE STATION SUPPORTING DTMF PROTOCOL
    • 基站系统和支持DTMF协议的移动站
    • US20080279176A1
    • 2008-11-13
    • US11745457
    • 2007-05-08
    • Jing-Ru Cheng
    • Jing-Ru Cheng
    • H04L12/66
    • H04L12/66
    • A protocol is proposed for a mobile station to transmit Dual Tone Multi-Frequency (DTMF) to another mobile station. When a user presses a key on a source mobile station, which is connected to a target mobile station, DTMF data are transmitted via a digital channel to a base station first. Instead of converting the received DTMF data to a corresponding analog voice to the target mobile station, the base station forwards the DTMF data to the target station via a digital channel. The target mobile station parses the DTMF data and activates certain operation in response to the key pressed by the user.
    • 提出了一种用于移动台将双音多频(DTMF)发送到另一移动台的协议。 当用户按下连接到目标移动台的源移动台上的键时,首先通过数字信道将DTMF数据发送到基站。 代替将接收的DTMF数据转换为对应的模拟语音到目标移动台,基站经由数字信道将DTMF数据转发到目标站。 目标移动台解析DTMF数据,并响应用户按下的按键激活某些操作。