[asterisk-users] inband DTMF for g729

[Darrick Hartman (lists)]

Gang Chen wrote:
>> On 6/22/07, Gary Chen <gang.chen at insightbb.com> wrote:
>>> We are using Level 3. At this point, changing carrier is not an option.
>>>
>> Gary,
>>
>>  I use Level(3) with G729a and RFC2833.  No problems, no requirement
>> for inband G729.
>> -- 
>> Kristian Kielhofner
>>
> 
> I can connect to Asterisk IVR using a SIP phone and send RFC2833 with g729. 
> It works fine. But when test call from PSTN to Asterisk, if I set dtmf=auto 
> with g729, I got warning saying something like  * does not support inband 
> for g729 and sutomaticlly switch to rfc2833.  If I set dtmf=g729, there is 
> no warning but I have the same problem. This tells me that Level3 does use 
> inband for g729 or maybe I am doing something wrong .
> 
> Gary 

Gary,

I'll restate what Kristian just said above.  You do NOT need inband for 
Level 3.  Set dtmf=RFC2833.

Do you have the correct g729 codec licenses installed?  This may be more 
of a transcoding issue than anything else.

Darrick
-- 
Darrick Hartman
DJH Solutions, LLC
http://www.djhsolutions.com