[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:                
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Project:                    DAHDI-linux
Issue ID:                   17224
Category:                   dahdi (the module)
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     feedback
JIRA:                        
Reviewboard Link:            
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Date Submitted:             2010-04-21 14:53 CDT
Last Modified:              2010-04-23 09:54 CDT
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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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 (0120816) sum (reporter) - 2010-04-23 09:54
 https://issues.asterisk.org/view.php?id=17224#c120816 
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yes this is new behavior of an upgrade

used to work: 
Asterisk: 1.6.2.1
DAHDI Version: 2.2.1 
and has 1.6.2.6 chan_dahdi with the modifications of dtmf callerid.


the new behavior:
Asterisk: 1.6.2.6
DAHDI: 2.3.0
chan_dahdi with the modification of dtmf callerid.


For example if I put before dial PlayTones(ring) it fails and never get to
the dial section, if I do the same on the previous version it works ok, so
it seems an issue of dahdi 2.3.0 

It doesn't look the same as the issue mentioned, if I use the r option on
the dial I can't hear the ring either, and I think is not a asterisk issue
I think is dahdi the other bug has no mention of dahdi version is using.
It also mention session progress, but i think is nothing to do with the
behavior of the analog lines, here the problem seems like before the audio
from the telco was passing ones I dial no it doesn't until answer is
detected.

The exact config of the lines is kewel start, with polarity reversal for
answer and hangup but the beginin of the dtmf callerid comes before the
polarity reversal (DTMF callerid without polarity reversal) with dtmf
tones. 

Issue History 
Date Modified    Username       Field                    Change               
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2010-04-23 09:54 sum            Note Added: 0120816                          
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