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Reply To: Trapezoidal or Sinusoidal ringin


Hope this could be a help,
In my experience I have seen sinusoidal ringing (this is what local exchanges provides), it has a purpose: Class services allow you to have distinctive ringing for example, therefore changing the cadence and frecuency you can do it, the S ringing is the solution. Not sure but my belive is the T rininging could no work in the way customers use to hear it.
Hop it helps you