[asterisk-bugs] [Asterisk 0016941]: SIP RTP audio delay

[Asterisk Bug Tracker]

The following issue requires your FEEDBACK. 
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https://issues.asterisk.org/view.php?id=16941 
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Reported By:                sharvanek
Assigned To:                
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Project:                    Asterisk
Issue ID:                   16941
Category:                   Channels/chan_sip/General
Reproducibility:            always
Severity:                   major
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:             2010-03-01 20:42 CST
Last Modified:              2010-03-03 09:34 CST
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Summary:                    SIP RTP audio delay
Description: 
This is *not* a latency issue.

Here's a full description:
http://forums.digium.com/viewtopic.php?f=1&t=73267&start=0&sid=404b57776485f8f2e376bfaf1d394dd5

This is a very very odd issue, when a caller comes in through two asterisk
boxes via SIP the IVR is heard fine, but when transferred from the IVR the
caller and the person being called experience about 2-3 seconds of silence
before audio begins to flow.

This has been reported numerous times across the net but no real solution,
some examples are:

http://www.mail-archive.com/asterisk@uc.org/msg05938.html
http://www.trixbox.org/forums/trixbox-forums/help/3-second-delay-answering-calls

sadly there isn't much debug here, a packet capture shows RTP flowing etc
the same in both circumstances, please advise.


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 (0118836) lmadsen (administrator) - 2010-03-03 09:34
 https://issues.asterisk.org/view.php?id=16941#c118836 
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I think a recording of the delay in question may also be useful here... 

Issue History 
Date Modified    Username       Field                    Change               
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2010-03-03 09:34 lmadsen        Note Added: 0118836                          
2010-03-03 09:34 lmadsen        Status                   new => feedback     
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