[asterisk-bugs] [Asterisk 0009382]: Inband DTMF Double digits being sent.

[Asterisk Bug Tracker]

The following issue has been set as RELATED TO issue 0017253. 
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https://issues.asterisk.org/view.php?id=9382 
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Reported By:                remiq
Assigned To:                file
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Project:                    Asterisk
Issue ID:                   9382
Category:                   Core/RTP
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     closed
Asterisk Version:            1.2.14 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
Resolution:                 won't fix
Fixed in Version:           
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Date Submitted:             2007-03-26 16:46 CDT
Last Modified:              2010-04-27 12:45 CDT
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Summary:                    Inband DTMF Double digits being sent.
Description: 
When dtmfmode is set to inband for SIP or when using IAX2, you can hear the
DTMF digit twice in the audio stream.  This happens while Asterisk is
parsing the DTMF.  For a fraction of a second, while the end user generated
DTMF is being detected, the DTMF is passed inband.  Once the DTMF is
detected Asterisk silences it and regenerates it.  Sensitive machines like
auto attendants pick up both the brief end user generated tone as well as
the full length asterisk generated tone and ultimately perceive each digit
twice. I was able to eliminate this by not letting Asterisk silence and
regenerate the DTMF digit.  I've attached a fix, I removed some code from
channel.c and dsp.c .

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Relationships       ID      Summary
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related to          0017253 Inband DTMF Double digits being sent.
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Issue History 
Date Modified    Username       Field                    Change               
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2010-04-27 12:45 lmadsen        Relationship added       related to 0017253  
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