Apparatus and method for a multiple tone code sender system for
automatic call initiation
    1.
    发明授权
    Apparatus and method for a multiple tone code sender system for automatic call initiation 失效
    用于自动呼叫发起的多音码发送器系统的装置和方法

    公开(公告)号:US4156115A

    公开(公告)日:1979-05-22

    申请号:US891883

    申请日:1978-03-30

    IPC分类号: H04M1/50

    CPC分类号: H04M1/505

    摘要: A tone sender system for producing analog tone pairs for transmission of the digits comprising a telephone number. Dual codes, multi-frequency and touch calling multi-frequency, are produced to generate simulated test call originations. This tone sender system provides in a single source the capability to generate telephone call originations requiring either multi-frequency (MF) or touch calling multi-frequency (TCMF) tone pairs for the digit transmission. The tone code to be utilized is selectable.

    摘要翻译: 一种用于产生用于传输包括电话号码的数字的模拟音调对的音调发送器系统。 产生双码,多频和触摸呼叫多频,以产生模拟测试呼叫发起。 该音频发送器系统在单个源中提供产生需要用于数字传输的多频(MF)或触摸呼叫多频(TCMF)音调对的电话呼叫发起的能力。 要使用的音码可以选择。