[asterisk-bugs] [Asterisk 0019003]: Fax detection always jump to the fax extension

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=19003 
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Reported By:                microlana
Assigned To:                
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Project:                    Asterisk
Issue ID:                   19003
Category:                   Channels/chan_dahdi
Reproducibility:            always
Severity:                   feature
Priority:                   normal
Status:                     new
Asterisk Version:           1.8.2.3 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2011-03-21 06:49 CDT
Last Modified:              2011-04-01 13:55 CDT
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Summary:                    Fax detection always jump to the fax extension
Description: 
We set up faxdetect=incoming into the chan-dahdi.conf and faxdetect = no
into the sip.conf

This settings is not work as expected by the Asterisk documentation.
As described at documentation, DAHDI fax detection must be worked only if
call the Answer() application before Dial() application.

But if we got incoming voice call from the DAHDI ISDN PRI, then immediatly
(i.e. w/o Answer()) call a Dial() application to the SIP extension by
Dial(SIP/003110,30,tTkK) and then start a fax machine on originated side,
the Asterisk detect a fax-tone and jump to a fax-extension.


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Relationships       ID      Summary
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has duplicate       0019004 Fax detection always jump to the fax ex...
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 (0133290) lmadsen (administrator) - 2011-04-01 13:55
 https://issues.asterisk.org/view.php?id=19003#c133290 
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I'm pretty sure the fact that you enabled the t, T, k, and K options to
Dial() caused the channel to be immediately answered, because those flags
cause Asterisk to listen for DTMF during the call, which I think requires
the channel to be answered.

Which documentation refers to the fax extension not being triggered if
there is no Answer()? That sounds wrong to me. 

Issue History 
Date Modified    Username       Field                    Change               
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2011-04-01 13:55 lmadsen        Note Added: 0133290                          
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