[asterisk-bugs] [Asterisk 0019267]: Hold music lost after attended transfer

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=19267 
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Reported By:                byronclark
Assigned To:                
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Project:                    Asterisk
Issue ID:                   19267
Category:                   Channels/chan_sip/Transfers
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
Asterisk Version:           1.8.4 
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:             2011-05-10 15:40 CDT
Last Modified:              2011-05-11 10:46 CDT
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Summary:                    Hold music lost after attended transfer
Description: 
Testing with three endpoints I see this behavior:
A calls B
B begins an attended transfer
  - A hears hold music
B dials C
C answers
C places the call on hold
  - B hears hold music
B completes the attended transfer
  - A hears silence

As soon as C resumes the call, audio flows in both directions. C can even
place the call on hold again and A will hear hold music.

If B completes the attended transfer before C places the call on hold,
then audio works at all times.

Please let me know what debug information would be useful to track this
down.
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 (0134792) byronclark (reporter) - 2011-05-11 10:46
 https://issues.asterisk.org/view.php?id=19267#c134792 
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I tested this same call setup with 1.6.2.17.3 and saw this behavior:
A calls B
B begins an attended transfer
  - A hears hold music
B dials C
C answers
C places the call on hold
  - B hears hold music
B completes the attended transfer
  - A hears hold music

The only difference is that A continues to hear hold music after the
transfer completes. 

Issue History 
Date Modified    Username       Field                    Change               
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2011-05-11 10:46 byronclark     Note Added: 0134792                          
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