You can use
start_dtmf in a dialplan to enable in-band DTMF detection (i.e. the detection of DTMF tones on a channel). You should do this when you want to be able to identify DTMF tones on a channel that doesn't otherwise support another signaling method (like RFC2833 or INFO).
Make sure to expect (and handle) the DTMF tones
RFC 2833 is obsoleted by RFC 4733.
<!-- a sample IVR --> <extension name="ivr_demo"> <condition field="destination_number" expression="5000"> <action application="answer"/> <action application="start_dtmf" /> <action application="ivr" data="demo_ivr"/> </condition> </extension>
start_dtmf line listed above starts the
start_dtmf application on this channel to allow for DTMF detection.
Do not use the
If using in conjunction with
This application uses Media BUG.