[asterisk-users] Re: IAX2 one way audio

[Martin Joseph]

On 2006-11-12 14:48:13 -0800, "joe a. (joea at j4computers.com)" 
<joea at j4computers.com> said:

> Experiencing one way audio using IAX2.
> I did see some other posts on this, and see there may be some internal  
> issues with asterisk and one way audio.  Can this be a widespread 
> problem?   So many seem to be using IAX, I find it puzzling.
> 
> Some information points to this being a problem on asymmetrical 
> connections .  This is a decidedly asymmetrical connection, with 1.5 
> Mbs download and  256 kbs, upload.   A satellite link, to boot.  So, 
> maybe this is a  meltdown right from the start?  Event the vendor of 
> the IAX service was  not too keen.
There is an open bug reports on IAX2 audio going one way after a spike 
in lag.  This seemed to be connected to the newer jitter buffer,  but 
it isn't clear yet really.
> 
> Oddly, my first few connections worked fine (unexpectedly good audio, 
> both  ways).  Being all happy and stuff, made a call to a client, to 
> "show off".    Yep.  could not hear me.
> 
> Since then all calls have connected quickly, but are "receive only".  
> I've  tried rebooting the asterisk box, changing "jitter" related 
> stuff, no joy.
> 
> It is behind a firewall, but I can see no packets dropped, related to 
> the  IP's involved.
> 
> Anyway, if there are experiences to relate, please do.

Don't know really, but it does sound similar to the open bug report.

Marty