As Brian said most of tones cannot be carried via g729 only some of them. You are just didn't encounter this problem yet. I believe that it's a good idea to convert inband -> rfc2833 right on the border with analog lines (which are g711). On Thu, Jan 25, 2018 at 2:13 AM, Raimundo Pérez Nieves < raimundo.perez.cuba@gmail.com> wrote:

Thanks Brian, but I am using tone_detect with g729 (commercial license) and works very good. That was the reason I tried with spandsp module, because it allows detect tone using cadence. What is the meaning of f1 and f2 in segment tone debug, nobody can answer me this question. Thanks

Enviado desde mi iPhone

El 24/01/2018, a la(s) 16:40, Brian West <brian@freeswitch.com> escribió:

You can't do tone detect on G729, the bandwidth of the audio is insufficient!

On Wed, Jan 24, 2018 at 5:58 AM, Raimundo Pérez Nieves < raimundo.perez.cuba@gmail.com> wrote:

...

Hello, spandsp_start_tone_detect is compatible with G729 codec??? Because Iam testing and I get no result.

Thanks

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