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Summary:ASTERISK-04711: dtmf inband with g729
Reporter:Dov Bigio (dovb)Labels:
Date Opened:2005-07-27 14:59:49Date Closed:2011-06-07 14:10:20
Priority:MinorRegression?No
Status:Closed/CompleteComponents:Core/General
Versions:Frequency of
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Description:I have a connection with a Brazilian VoIP Provider on my sip.conf and I am using G729.

register => username:pwd:username@gvt.com.br/3060_rjo

[rjo_out_3060]
type=peer
host=gvt.com.br
secret=pwd
username=username
fromuser=username
fromdomain=gvt.com.br
dtmfmode=inband

When making a call through this channel, I get intermitent warning messages

Jul 27 16:56:59 WARNING[1208]: dsp.c:1469 ast_dsp_process: Inband DTMF is not supported on codec g729. Use RFC2833

The problem is that it works with inband, and if I use rfc2833 as suggested, dtmf won't work.

I am not sure the reason for this warning, but it definitely doesn't display a message that is valid for my case.

****** ADDITIONAL INFORMATION ******

The Brazilian provider I use is GVT (http://www.gvt.com.br/)
This happened in version 1.0.7 and still happens in 1.0.9
Comments:By: twisted (twisted) 2005-07-27 16:26:25

This is not a bug.  DTMF is not supported on g729.  You got lucky if it did work.