[Asterisk-Users] Problems with IAX2?

[Steve Kann]

Andrew Kohlsmith wrote:

>>Are there open problems/issues with iax2 and jitter (quality)?
>>    
>>
>
>  
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>>Just upgraded to today's dev cvs about an hour ago, and it seems the iax
>>conversations are lower quality then a month or two ago. iax2 show firmware
>>says version 13. (Test call originated from C7960 with g711.)
>>    
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>
>I noticed the same thing.  Jitter buffer apparently is broken, and has always 
>been.  I was advised to say jitterbuffer=no in iax.conf, but I swear it's 
>better with it set to yes and then executing "iax2 set jitter 250" in the 
>CLI.  At least it was before I cvs up'd.  :-)
>  
>

I found a jitter buffer bug in IAX2 a short while ago.  It could 
potentially lead to misordered frames in conversations, and does so 
quite often when the sender of frames is using iaxclient under win9x.   
I compensated for this with a change in iaxclient, but the problem could 
also happen in asterisk-generated frames.


See :
http://sourceforge.net/mailarchive/forum.php?thread_id=4096021&forum_id=29380

I don't know if this is the bug people are hitting, or not, though.



>Jeremy (of NuFone fame) has his jitterbuffer=no on his servers and since he's 
>my VOIP provider I tend to just try and match his setup in terms of IAX2 
>anyway.  I dunno, I do agree with you that it seemed better a while ago.
>
>Regards,
>Andrew
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