[asterisk-bugs] [Asterisk 0012505]: Jitterbuffer used with Queues causes large audio delay

[noreply at bugs.digium.com]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=12505 
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Reported By:                johnlange
Assigned To:                
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Project:                    Asterisk
Issue ID:                   12505
Category:                   Core/Jitterbuffer
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     feedback
Asterisk Version:           1.4.18 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             04-23-2008 11:35 CDT
Last Modified:              07-21-2008 09:27 CDT
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Summary:                    Jitterbuffer used with Queues causes large audio
delay
Description: 
If you configure ZAP for a fixed jitter buffer of
about 60ms the calls sent to agent phones experience a huge amount of
audio latency. I'm just estimating but I'd say its at least 600ms.

This effects only the calls coming through queues. Calls that do not go
through
a Queue are fine.

Disabling the jitter buffer resolves the issue.

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---------------------------------------------------------------------- 
 johnlange - 07-21-08 09:27  
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In our incident, the incoming lines are a T1 PRI. This would most often be
the case with queues since they are most often used with higher call
volumes. I will do an upgrade to the latest version of 1.4 and test again
though this will probably not happen for a week or so. 

Issue History 
Date Modified   Username       Field                    Change               
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07-21-08 09:27  johnlange      Note Added: 0090519                          
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