[asterisk-bugs] [Asterisk 0015296]: TDM call over IAX trunk gives choppy audio, SIP call over same IAX trunk sounds fine.

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=15296 
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Reported By:                alecdavis
Assigned To:                
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Project:                    Asterisk
Issue ID:                   15296
Category:                   Channels/chan_iax2
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     feedback
Asterisk Version:           1.6.1.0 
JIRA:                        
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): 1.6.1 
SVN Revision (number only!): 199300 
Request Review:              
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Date Submitted:             2009-06-09 07:03 CDT
Last Modified:              2009-09-18 19:49 CDT
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Summary:                    TDM call over IAX trunk gives choppy audio, SIP call
over same IAX trunk sounds fine.
Description: 
Testing to an Asterisk 1.4.20 -> Milliwatt application.
Also tested to an elderly 1.6.x r178446M release. same problems.

senarios are as below:

Analog phone <-> FXS-TDM800P/Asterisk 1.6.1.0 <-IAX internet-> Asterisk
1.4.20 Milliwatt App.

SIP phone <-> Asterisk 1.6.1.0 <-IAX internet-> Asterisk 1.4.20 Milliwatt
App.

Analog phone audio sounds very choppy, SIP phone audio sounds fine.

Tried with GSM only IAX trunks, and ALAW only trunks, same result, no
improvement.


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Relationships       ID      Summary
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related to          0015337 Drawn out and static audio on inbound i...
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 (0111030) alecdavis (reporter) - 2009-09-18 19:49
 https://issues.asterisk.org/view.php?id=15296#c111030 
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Such an obscure setting, /etc/asterisk/asterisk.conf doesn't even advise
what it's about, one line ';internal_timing = yes'

What other loading/performance implications does it have?

However, what I suspect is internal_timing when set to yes kicks in and
out, but yet to verify. 

Issue History 
Date Modified    Username       Field                    Change               
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2009-09-18 19:49 alecdavis      Note Added: 0111030                          
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