It typically means the device on the other end of the channel is sending in malformed RFC2833 DTMF.

What FreeSWITCH version are you using, and also, do you know what kind of device is connected on the other end?

On Mon, 11 Nov 2019 at 14:28, Saqib Nawaz <saqibnawaz5812@gmail.com> wrote:

Hi Guys,

I'm getting this error message printed on my console 

[ERR] switch_rtp.c:2013 Failed DTMF sanity check.

Why this is popping up ? how can I prevent this from occurring?

Regards,
Saqib Nawaz.

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_________________________________________________________________________

The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
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Join our online community to chat in real time https://signalwire.community

Professional FreeSWITCH Services
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