[asterisk-bugs] [Asterisk 0013937]: jitterbuffer

[Asterisk Bug Tracker]

The following issue has been SUBMITTED. 
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http://bugs.digium.com/view.php?id=13937 
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Reported By:                auf
Assigned To:                
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Project:                    Asterisk
Issue ID:                   13937
Category:                   Addons/General
Reproducibility:            have not tried
Severity:                   minor
Priority:                   normal
Status:                     new
Asterisk Version:           1.4.21.2 
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:             2008-11-20 02:49 CST
Last Modified:              2008-11-20 02:49 CST
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Summary:                    jitterbuffer
Description: 
hi,

i want to get some statistics about the call quality with asterisk.
I used the following command: iax2 show netstats
and the result changes depending on the configuration of iax.conf.

When i enable jitterbuffer=yes and forcejitterbuffer=yes, i get the
following result:

voip*CLI> iax2 show netstats
                                -------- LOCAL --------------------- 
-------- REMOTE --------------------
Channel                    RTT  Jit  Del  Lost   %  Drop  OOO  Kpkts  Jit 
Del  Lost   %  Drop  OOO  Kpkts
IAX2/i55333-6207          1500    2   42     0   0     0    0      0    0 
  0     0   0     0    0      0
1 active IAX channel
voip*CLI> iax2 show netstats
                                -------- LOCAL --------------------- 
-------- REMOTE --------------------
Channel                    RTT  Jit  Del  Lost   %  Drop  OOO  Kpkts  Jit 
Del  Lost   %  Drop  OOO  Kpkts
IAX2/i55333-6207            22    2   43     1   0     0    0      1    0 
 40     0   0     0    0      0
1 active IAX channel
voip*CLI> iax2 show netstats
                                -------- LOCAL --------------------- 
-------- REMOTE --------------------
Channel                    RTT  Jit  Del  Lost   %  Drop  OOO  Kpkts  Jit 
Del  Lost   %  Drop  OOO  Kpkts
IAX2/i55333-6207            22    2   43     1   0     0    0      1    0 
 40     0   0     0    0      0
1 active IAX channel


and when i disable it i get:

voip*CLI> iax2 show netstats
                                -------- LOCAL --------------------- 
-------- REMOTE --------------------
Channel                    RTT  Jit  Del  Lost   %  Drop  OOO  Kpkts  Jit 
Del  Lost   %  Drop  OOO  Kpkts
IAX2/i55333-11724         1500   -1    0    -1  -1     0   -1      0    0 
  0     0   0     0    0      0
1 active IAX channel
voip*CLI> iax2 show netstats
                                -------- LOCAL --------------------- 
-------- REMOTE --------------------
Channel                    RTT  Jit  Del  Lost   %  Drop  OOO  Kpkts  Jit 
Del  Lost   %  Drop  OOO  Kpkts
IAX2/i55333-11724           20   -1    0    -1  -1     0   -1      1    0 
 40     0   0     0    0      0
1 active IAX channel
voip*CLI> iax2 show netstats
                                -------- LOCAL --------------------- 
-------- REMOTE --------------------
Channel                    RTT  Jit  Del  Lost   %  Drop  OOO  Kpkts  Jit 
Del  Lost   %  Drop  OOO  Kpkts
IAX2/i55333-11724           20   -1    0    -1  -1     0   -1      1    0 
 40     0   0     0    0      0
1 active IAX channel


Should i enable it or not?
Is there any threshold for the field "lost" and "%" for which we can say
that the call quality is bad?

Thank you

F.A

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Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2008-11-20 02:49 auf            New Issue                                    
2008-11-20 02:49 auf            Asterisk Version          => 1.4.21.2        
2008-11-20 02:49 auf            SVN Branch (only for SVN checkouts, not tarball
releases) => N/A             
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