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Method to reduce distortion of a digital data signal by a pots ringing signal, and related telephone ringing signal generator
Method to reduce distortion of a digital data signal by a pots ringing signal, and related telephone ringing signal generator
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机译:减少壶铃信号引起的数字数据信号失真的方法以及相关的电话铃响信号发生器
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摘要
To reduce the distortion of digital data due to on/off switching of the ringing of a Plain Old Telephone Service (POTS) signal (RINGING1, RINGING2) transmitted simultaneously with the digital data over a single line (LINE), the telephone ringing signal generator (POTS-RING GENERATOR 1, POTS RING GENERATOR 2) produces a digital data friendly ringing signal (RINGING1, RINGING2). The telephone ringing signal generator (POTS-RING GENERATOR 1, POTS RING GENERATOR 2) thereto applies a transient smoothening window (WINDOW1, WINDOW2) to a sine or cosine shaped signal (SINE1, SINE2).
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