Digit collection functions

The ADI service provides the following synchronous and asynchronous digit collection functions:

Function	Synchronous/ Asynchronous	Description
adiGetDigit	Synchronous	Retrieves a single digit from the internal digit collection queue.
adiInsertDigit	Synchronous	Inserts a digit at the end of the ADI service internal digit queue.
adiPeekDigit	Synchronous	Reads the first digit from the internal digit collection queue without removing it.
adiFlushDigitQueue	Synchronous	Flushes the internal digit collection queue.
adiCollectDigits	Asynchronous	Starts asynchronous digit collection.
adiStopCollection	Asynchronous	Terminates digit collection.