[asterisk-bugs] [DAHDI-linux 0017224]: FXO Outgoing dial not passing audio until channel answer

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=17224 
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Reported By:                sum
Assigned To:                sruffell
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Project:                    DAHDI-linux
Issue ID:                   17224
Category:                   dahdi (the module)
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     assigned
JIRA:                        
Reviewboard Link:            
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Date Submitted:             2010-04-21 14:53 CDT
Last Modified:              2010-12-01 13:58 CST
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Summary:                    FXO Outgoing dial not passing audio until channel
answer
Description: 
I have a FXO conected to the PSTN, previously I just Dial a number and I
have the feedback of the telco (ringback), with the las version of dahdi
(not sure if dahdy or chan_dahdi issue), I have to do an answer befor dial
to let the ringback pass to the calling party.
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 (0129255) sum (reporter) - 2010-12-01 13:58
 https://issues.asterisk.org/view.php?id=17224#c129255 
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yes, is easy to reproduce, if answerpolarityswitch is on I cant hear
anything (ring) until the channel is answered, when I said trunk was ok I
couldn't test it on a line with polarity reversal, some days later I did
and reported back that the problem is reproducible.

example: 1.6.2.14 and 2.4.0 has this issue. 

Issue History 
Date Modified    Username       Field                    Change               
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2010-12-01 13:58 sum            Note Added: 0129255                          
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