[asterisk-bugs] [Asterisk 0016594]: ISDN to SIP doesn't generate SIP 180 Ringing with Call Progress ISDN message

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=16594 
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Reported By:                denisgalvao
Assigned To:                
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Project:                    Asterisk
Issue ID:                   16594
Category:                   Core/Channels
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     acknowledged
Asterisk Version:           1.6.1.12 
JIRA:                       SWP-718 
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:             2010-01-13 10:57 CST
Last Modified:              2010-01-13 23:39 CST
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Summary:                    ISDN to SIP doesn't generate SIP 180 Ringing with
Call Progress ISDN message
Description: 
When I place a call trough a SIP UA and this call goes out through an ISDN
link, the Call Progress message from ISDN is not converted to a SIP 180
Ringing message to the UA.

P.S.: Im not sure about the category of this issue, BTW I believe it is a
channel related thing.
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 (0116649) wimpy (reporter) - 2010-01-13 23:39
 https://issues.asterisk.org/view.php?id=16594#c116649 
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I think the quoted document is getting it wrong.

A proceeding message only means the setup was acceptred for switching, but
not that there is a remote party ringing. That will be indicated by an
alterting message.
A proceeding message should translate to 183 Trying or something.

At this point it might be worth noting that a call can be connected,
without having been in the ringing state.
Not only the proceeding, but also the alerting message are optional. 

Issue History 
Date Modified    Username       Field                    Change               
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2010-01-13 23:39 wimpy          Note Added: 0116649                          
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