Merged revisions 178828 via svnmerge from

https://origsvn.digium.com/svn/asterisk/trunk

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  r178828 | murf | 2009-02-26 10:22:11 -0700 (Thu, 26 Feb 2009) | 34 lines
  
  Merged revisions 178804 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.4
  
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    r178804 | murf | 2009-02-26 10:09:03 -0700 (Thu, 26 Feb 2009) | 28 lines
    
    This patch prevents the feature detection timeout from being cut in half.
    
    Because the ast_channel_bridge() call will return 0 and pass
    a frame pointer for both DTMF_BEGIN and DTMF_END, the feature_timer
    field in hte config struct is getting decremented twice, which 
    effectively cuts the digittimeout in half. I added conditions
    to the if statement to only let DTMF_END frames to flow thru,
    which solved the problem. Also, when the frame pointer is null,
    let control flow thru-- this usually happens on timeouts. I added
    a comment to the code to explain what's going on and why.
    
    Many thanks to sodom for reporting this problem. Personnally, it always seemed
    like something was wrong with the featuredigittimeout, but I never
    could quite decide what... and was too busy to investigate.
    This bug forced the issue, and now we know.
    
    Sodom had other issues in 14515, but I couldn't reproduce them. If
    he still has problems, and wants to get them solved, he is welcome
    to reopen 14515.
    
    
    (closes issue #14515)
    Reported by: sodom
    Patches:
          14515.patch uploaded by murf (license 17)
    Tested by: murf, sodom
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git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.6.0@178866 f38db490-d61c-443f-a65b-d21fe96a405b

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