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    • 4. 发明授权
    • Alphabetic telephone dialer apparatus and method
    • 字母电话拨号设备及方法
    • US5388154A
    • 1995-02-07
    • US173349
    • 1993-12-23
    • William Solomon
    • William Solomon
    • H04M1/26H04M11/06H04M11/00
    • H04M1/26H04M11/066Y10S379/906
    • A telephone dialing method relating each key of an alphabetic keyboard to a numeric digit and a telephone dialing apparatus and alphabetic keyboard device for sending dual-tone-multi-frequency (DTMF) and/or pulse telephone dialing signals over a communication path such as a local loop connecting a subscriber telephone to a switching office via a telephone dialing circuit. The alphabetic keyboard device may be configured according to a conventional typewriter QWERTY keyboard layout and is connectable to a conventional telephone to supplement its 12-key standard keypad, allowing the telephone to be dialed with individual alphabetic letters.
    • 将字母键盘的每个键与数字电话机相关联的电话拨号方法和电话拨号装置和字母键盘装置,用于通过通信路径发送双音多频(DTMF)和/或脉冲电话拨号信号,例如 本地环路通过电话拨号电路将用户电话连接到交换局。 字母键盘设备可以根据常规打字机QWERTY键盘布局来配置,并且可连接到常规电话以补充其12键标准键盘,允许以单个字母字母拨打电话。