So I did a little more digging and found a real simple answer:
${CHANNEL(audionativeformat)}
tells me 'ulaw' or 'siren14' and lets me pick the right file extension
for the record function.
On Tue, Sep 13, 2011 at 5:19 PM, Tom Browning <ttbrown...@gmail.com> wrote:
> Sorry if this is an obvious question and perhaps my Google foo isn't
> right on this one:
>
> I have calls coming into an Asterisk server that may be using 2
> different codecs. I am recording audio in both cases but the
> challenge is knowing which codec was negotiated at call setup. I need
> to pass the proper format to the record command as the codecs cannot
> be transcoded and are only supported for playback/record/passthru etc.
>
> Is there some global variable present that I can look at for codec
> identification?
>
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