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@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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