发明授权
US4156115A 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
- 专利标题： Apparatus and method for a multiple tone code sender system for automatic call initiation
- 专利标题（中）： 用于自动呼叫发起的多音码发送器系统的装置和方法
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申请号： US891883申请日： 1978-03-30
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公开(公告)号： US4156115A公开(公告)日： 1979-05-22
- 发明人: Lucian J. Lesny , Peter J. Flynn
- 申请人： Lucian J. Lesny , Peter J. Flynn
- 申请人地址： IL Northlake
- 专利权人： GTE Automatic Electric Laboratories Incorporated
- 当前专利权人： GTE Automatic Electric Laboratories Incorporated
- 当前专利权人地址： IL Northlake
- 主分类号： H04M1/50
- IPC分类号： H04M1/50
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.
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