[Asterisk-Dev] False echo created by large read buffer in chan_zap.c

[Peter Svensson]

On Fri, 19 Nov 2004, Kevin P. Fleming wrote:

> Joel Daniels wrote:
> >    Theoretically, there might be a way to force Asterisk IAX to have very low
> > latency.  However this would only work on a very good LAN, and would represent
> > a huge bandwidth wastage, because you would have to send a whole IP packet for
> > every 2-5 milliseconds of data.  This would mean that you would have only 16-40
> > bytes of audio on each packet!  You can always try, but I don't know how much
> > success you will have.
> 
> Yeah, that would require a dedicated Ethernet between the machines I'm 
> sure, and even then you'd be dramatically increasing the interrupt load 
> on the PRI server, which already has to handle the Zaptel interrupts. I 
> don't think I'll try that!

You could use the Asterisk TDMoE protocol in that case. One frame every 
ms, with a lot of channels in each frame. I have not tried it myself.

Peter