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Finding DTMF type

asked 2019-07-02 13:39:54 +0000

updated 2019-07-02 16:01:58 +0000

Jaap gravatar image

I have a Wireshark capture with DTMF tones send. With rtpevent I can see the tones typed. I would like to find their type (inband, outband, RFC2833). Where can is see it?

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answered 2019-07-02 16:06:57 +0000

Jaap gravatar image

The fact that you see RTP events tells me that the DTMF tones are transferred by means of RFC 2833, or rather RFC 4733. Wether or not tones are also injected into the audio stream is for you to tell, they could both be there.

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Asked: 2019-07-02 13:39:54 +0000

Seen: 47 times

Last updated: Jul 02