[asterisk-bugs] [Asterisk 0016977]: After upgrade from 1.4.21 to 1.4.29 on internal SIP calls don't hear the ringback tone

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=16977 
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Reported By:                crt
Assigned To:                
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Project:                    Asterisk
Issue ID:                   16977
Category:                   Channels/chan_sip/General
Reproducibility:            have not tried
Severity:                   minor
Priority:                   normal
Status:                     feedback
Asterisk Version:           1.4.29.1 
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:             2010-03-06 10:11 CST
Last Modified:              2010-03-24 04:27 CDT
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Summary:                    After upgrade from 1.4.21 to 1.4.29 on internal SIP
calls don't hear the ringback tone
Description: 
Scenario: on the previous Asterisk 1.4.21 can hear ringback tone both
calling internal extensions phones and outside phones with SIP trunks.
After a upgrade compiling the sources of Asterisk 1.4.29 i can hear
ringback tones only calling the outside phones. On the internals extensions
i don'hear the ringback but the voice flow perfectly after answering the
call.
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 (0119790) crt (reporter) - 2010-03-24 04:27
 https://issues.asterisk.org/view.php?id=16977#c119790 
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Ok - after upgrading to 1.4.30 the problem seem to go away.
Note that, in order, i applied the following patch: issue16705_2.diff and
issue16647.diff respectively to solve the "starting music on hold" when
sending or receiving faxes with T.38 and "insufficient information in SDP
(c=..)" when sending or receiving faxes with T.38.
The same patches was applied to 1.4.29 for the same issues.

Regards and thanks,
Cristiano aka .:[CRT]:. 

Issue History 
Date Modified    Username       Field                    Change               
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2010-03-24 04:27 crt            Note Added: 0119790                          
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