The easy way is the start_dtmf application you can call from your dialplan. Once you call it any inband dtmf that is detected in later apps will be interpreted.

Anthony Minessale II

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----- Original Message ----
From: Dinesh Dialani <ddialani@devfoundry.com>
To: freeswitch-users@lists.freeswitch.org
Sent: Friday, July 27, 2007 1:31:08 AM
Subject: [Freeswitch-users] how to detect dtmf wave files and convert it to DTMF tones in RFC 2833

Hi All,

There exists a library libteletone. I know that it has functionality
to detect and generate DTMF tones, but I didn┤ get any help as to how
can I test it with my FreeSwitch configuration, as no document is available on http://wiki.freeswitch.org/wiki

Is there anybody who used detection and generation of DTMF
tones using libteletone library in FreeSwitch and can help me to use it?

Thanks in advance. 

Dinesh   