[Freeswitch-users] pre_answer and dtmf

[Steven Ayre]

Yep, most phones won't send RTP which'll include DTMF until 200 OK (answer)
is received...

That will depend on the caller really so perhaps it does work on certain
phones/versions, but not all will allow it.

-Steve



On 17 January 2013 14:11, Paul Cupis <paul at cupis.co.uk> wrote:

> On Thu, Jan 17, 2013 at 08:38:43AM -0500, Frank Carmickle wrote:
> > I can't seem to read digits with pre_answer.  Answer works just fine.  I
> know this used to work.  I'm not sure if it's upstreams problem or mine.
>  Where should I look?
>
> pre_answer will use Early Media, which will be one-way audio, so
> I would not expect you to be able to read digits from the caller
> unless you answer the call.
>
> Regards,
>
>
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