OK, Thanks

So if the DTMF was received as SIP-INFO I assume I could switch on sip tracing (sofia global siptrace on) and I would presumably see the relevant SIP packets.

But what can I do, check for in the logs, or check say in terms of a channel variable, that would enable me verify that a DTMF was being received as RFC2833 and not received in-band?

On Fri, 7 Jul 2017 at 14:51 Raúl Alexis Betancor Santana <rbetancor@gmail.com> wrote:

Out of band allways means 'out of the audio RTP stream' ... could be RFC2833 or could be SIP-INFO

2017-07-07 10:44 GMT+01:00 Mark Melling <mark.melling@savageminds.com>:

Hi,

How can you determine if Freeswitch is receiving DTMFs in-band or out-of-band?

I'm not entirely clear on terminology here, but is out-of-band the same as rfc 2833?

Thanks

Mark

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