[asterisk-users] Early media recognition

David Pinedo dpinedo at presenceco.com
Wed Jul 16 04:52:51 CDT 2014

Finally I could do it using the AMI Originate
and the parameter EarlyMedia=true. So, when you throw the call, when
detects the EarlyMedia (SIP 183) the channels is bridged to context and you
can do the recording.
This works from Asterisk 11.

On Fri, Jun 27, 2014 at 11:00 AM, David Pinedo <dpinedo at presenceco.com>

> Hello,
> Throwing calls from Asterisk to PSTN (via a VoIP gateway) some operators
> sends an explaining audio, in situations as:
> The phone number does is not assigned
> The phone is powered off
> etc.
> The audio is sent before the call to be answered.
> So, in an automatic dialling application I'd like to recognize that audio
> to know what to do with those calls (queue them to a service, mark as wrong
> number, unavailable, etc.).
> Does Asterisk have any functionality to recognize the audio in early media
> (similar to the answer machine detection)?
> Is  there a way to record the audio in early media to implement my own
> early media detector?
> Thank you in advance
> ---
> David Pinedo


*David Pinedo García*
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dpinedo at presenceco.com

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