insertDtmf
Queues a task that sends the provided DTMF tones.
If insertDtmf is called on the same object while an existing task for this object to generate DTMF is still running, the previous task is canceled.
Return
true on success and false on failure.
Parameters
This parameter is treated as a series of characters. The characters 0 through 9, A through D, #, and * generate the associated DTMF tones. The characters a to d are equivalent to A to D. The character ',' indicates a delay of 2 seconds before processing the next character in the tones parameter. Unrecognized characters are ignored.
Indicates the duration in ms to use for each character passed in the tones parameter. The duration cannot be more than 6000 or less than 70.
Indicates the gap between tones in ms. Must be at least 50 ms but should be as short as possible.