[asterisk-bugs] [Asterisk 0015220]: IAX2 choppy audio with MozIAX, only 20secs

[Asterisk Bug Tracker]

The following issue requires your FEEDBACK. 
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https://issues.asterisk.org/view.php?id=15220 
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Reported By:                stich86
Assigned To:                
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Project:                    Asterisk
Issue ID:                   15220
Category:                   Channels/chan_iax2
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     feedback
Asterisk Version:           1.6.1.0 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2009-05-29 03:12 CDT
Last Modified:              2009-05-29 17:43 CDT
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Summary:                    IAX2 choppy audio with MozIAX, only 20secs
Description: 
After a lot of test with Asterisk 1.4.24, i've switched to Asterisk 1.6.1.0
trying to solve this annoying problem.

Currently we have a production Asterisk 1.2, that use CAPI and IAX for a
callcenter. The iSDN card is an Eicon, and we haven't any problem on audio
or latency.

With installation of a new revision of Asterisk (1.4.24/1.6.1.0), iSDN
card OpenVOX B400e and chan_misdn, when a call is answered the IAX client
ear sound goods but the other peer ear a choppy and distorted audio for
about 15secs, after this time the audios goes fine. The command "iax2 show
netstats" show an RTT of 1000 that goes down after the 15secs.

I've found the issue id 0010807 that reports the same problem with
missmatched packet size from mISDN to chan_iax. I've applied the patch to
asterisk 1.4.24 and the call goes fine in out, but when a call goes in the
windows client crash. So that patch cannot be use for a production
environment.

This issue occurs also with Asterisk 1.6.1, mISDN v2 and chan_lcr.
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 (0105765) russell (administrator) - 2009-05-29 17:43
 https://issues.asterisk.org/view.php?id=15220#c105765 
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We can not support your usage of 1.6.1, as you are using an unsupported
channel driver.

However, we can try to help you out with 1.4.  First, please try the
latest code in the 1.4 branch.  If you still have a problem, then please
provide a packet capture of the call in question.
 

Issue History 
Date Modified    Username       Field                    Change               
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2009-05-29 17:43 russell        Note Added: 0105765                          
2009-05-29 17:43 russell        Status                   new => feedback     
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