[asterisk-users] DTMF

[Kevin P. Fleming]

Jeff LaCoursiere wrote:

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

No, DTMF is always out of band on IAX2, as long as Asterisk knows the
DTMF is happening; if the DTMF is inband on the SIP channel, and
Asterisk has been configured for non-inband DTMF on that channel, then
it is not aware the DTMF is even present, so it just stays in the audio
stream and gets compressed (and destroyed).

You can verify this by adding the 'dtmf' logger channel to your console
or a log file, and checking whether Asterisk is even aware of the DTMF
events on the SIP channel.

-- 
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
skype: kpfleming | jabber: kpfleming at digium.com
Check us out at www.digium.com & www.asterisk.org