[asterisk-bugs] [Asterisk 0016460]: [patch] DTMF CallerID detection without polarity reversal

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=16460 
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Reported By:                sum
Assigned To:                
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Project:                    Asterisk
Issue ID:                   16460
Category:                   Channels/chan_dahdi
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     feedback
Asterisk Version:           SVN 
JIRA:                       SWP-562 
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases):  trunk 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2009-12-17 08:55 CST
Last Modified:              2009-12-17 09:04 CST
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Summary:                    [patch] DTMF CallerID detection without polarity
reversal
Description: 
This is related to closed bug 9096, the patch is working fine but there are
some cases where the callerid is not detected due to  DTMFCID timed out
waiting for ring. Exiting simple switch
This happends when I connect a telular base to a TDM400P, convencional
lines has no problems. 
The thing is that the callerid is detected, but it seems to have a problem
detecting the ring after the callerid is setted, sometimes it hangsup the
channel and it starts again a simple switch, this time the channel detects
the ring but it misses the callerid. I have a small fix but maybe this is
not the best way to do it.
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 (0115377) sum (reporter) - 2009-12-17 09:04
 https://issues.asterisk.org/view.php?id=16460#c115377 
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you didn't give me the time to upload it :)

Sometimes I have some false Prering state on the lines, the code as it was
prevents to get the channels in congestion hangin up the channels that are
prering but no a real call. They also appear when the line is hanged.

this seems to fix the problem of the detection and it doesn't break the
hability to hangup those channels.
The patch as it is is working but there may be a better solution. 

Issue History 
Date Modified    Username       Field                    Change               
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2009-12-17 09:04 sum            Note Added: 0115377                          
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