Hmm, let me rephrase that (now that I have googled a bit).  I am having 
trouble with DTMF tones over two IAX trunks:

Polycom501--->ast---[IAX]---ast2---[IAX]--->provider

Both IAX trunks were ulaw, and that worked fine.  I recently changed the 
first leg to be g729 (as their internet connection is lower bandwidth). 
Now DTMF doesn't seem to pass.

In my searches just now I see that dtmfmode is not actually a valid 
keyword in iax.conf.

So may I assume that dtmfmode is inband only over IAX (since adding 
compression seems to have killed it?).  That would suck.

j

On Thu, 16 Apr 2009, Jeff LaCoursiere wrote:

>
> Is there a way to show the negotiated DTMF mode for an active channel?
>
> Cheers,
>
> j
>

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