[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:                     new
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:              07-17-2008 17:07 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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---------------------------------------------------------------------- 
 putnopvut - 07-17-08 17:07  
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I attempted to reproduce this today using DAHDI. I added the following
lines to my channel configuration for an FXS port on a Digium TDM400P.

jbenable=yes
jbforce=yes
jbimpl=fixed
jbmaxsize=60

I could not reproduce with these settings. If you had additional (or
different) settings or were not using an FXS channel when this occurred,
then please correct me in my settings.

If otherwise, then it may be that this issue has since been fixed. 

Issue History 
Date Modified   Username       Field                    Change               
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07-17-08 17:07  putnopvut      Note Added: 0090422                          
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