# DTMF and MF detection functions

The ADI service provides functions for enabling and disabling DTMF
and MF
detection. By default, DTMF detection is enabled when a call is established.

The following functions enable and disable DTMF and MF tone detection:

Function | Synchronous/ Asynchronous | Description
--- | --- | ---
adiStartDTMFDetector | Asynchronous | Starts DTMF detection (default is on).
adiStopDTMFDetector | Asynchronous | Stops DTMF detection.
adiStartMFDetector | Asynchronous | Starts the MF tone detector.
adiStopMFDetector | Asynchronous | Stops the MF tone detector.