DtmfRecognitionEngine.SetTerminationTones Method

Sets a collection of DTMF tones that will terminate DTMF recognition immediately.

Namespace:  Microsoft.Speech.Recognition
Assembly:  Microsoft.Speech (in Microsoft.Speech.dll)

public void SetTerminationTones(
	ICollection<DtmfTone> tones

A typical use of SetTerminationTone(DtmfTone) would set Hash (the symbol #, also known as the pound sign) as the termination tone. Using this setting, an application could issue the prompt "Please enter your PIN, followed by the pound sign".