[asterisk-bugs] [Asterisk 0015036]: ignore both DTMF BEGIN and END from RTP when not in RFC2833 mode

[Asterisk Bug Tracker]

The following issue has been SUBMITTED. 
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http://bugs.digium.com/view.php?id=15036 
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Reported By:                dimas
Assigned To:                
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Project:                    Asterisk
Issue ID:                   15036
Category:                   Channels/chan_sip/General
Reproducibility:            have not tried
Severity:                   minor
Priority:                   normal
Status:                     new
Asterisk Version:           1.4.24 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2009-05-05 12:33 CDT
Last Modified:              2009-05-05 12:33 CDT
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Summary:                    ignore both DTMF BEGIN and END from RTP when not in
RFC2833 mode
Description: 
I encountered this issue helping with 14815.
There is a code in chan_sip which drops AST_FRAME_DTMF frames coming from
ast_rtp_read if the dtmfmode is not RFC2833.
The problem is that only end frame is ignored while begin frame is still
passed to the core of Asterisk causing various effects like continuous
tone.

The patch makes behavior more consistent by dropping begin frames as well.
It also logs debug message to let easier troubleshooting.
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Issue History 
Date Modified    Username       Field                    Change               
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2009-05-05 12:33 dimas          New Issue                                    
2009-05-05 12:33 dimas          Asterisk Version          => 1.4.24          
2009-05-05 12:33 dimas          Regression                => No              
2009-05-05 12:33 dimas          SVN Branch (only for SVN checkouts, not tarball
releases) => N/A             
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