[Freeswitch-users] start_dtmf false positives

[Roman Dissauer]

Hi Guys,

we have troubles reliably recognizing DTMF tones by using dialplan application start_dtmf.
From our carriers we get some calls with inband DTMF and some with RFC2833. To our customers we need to always do RFC2833. Therefore we check SDP information and enable start_dtmf when RFC2833 is not available on the incoming call. When start_dtmf is executed we have a lot of false positives mostly at the start of audio but also during the call.

Is there a way to prevent false DTMF detection? Does anyone have same issues and a solution for it?

Kind regards
Roman Dissauer

RDI SOLUTIONS e.U.
Rosasgasse 13/24
1120 Wien, Österreich
T: +43 1 3530349 - 10
F: +43 1 3530349 - 99
roman.dissauer at rdi.at
www.rdi.at

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