[Asterisk-bsd] Increasing delay in Meetme with ztdummy

David G Lawrence dg228 at dglawrence.com
Sun Mar 2 01:21:13 CST 2008


> Hi,
> 
> I checked channel.c and the patch from
> (http://lists.digium.com/pipermail/asterisk-bsd/2007-July/002797.html) was
> correctly applied, both hunks. Asterisk was compiled from a clean build
> thereafter with everything in order.
> 
> I also confirmed that the "fixed" ztdummy.ko is also in and running.
> 
> Is there anything else I can check?

   The patch to channel.c was written originally for Asterisk 1.2.x. I
would think it would be compatible with 1.4.x, but perhaps not. It is
supposed to limit the queue depth on input frames to 3 or so to
prevent a large latency from developing.
   The replacement ztdummy changes the way that timing is done to use
the time of day clock instead of the interval clock, and has the affect
of keeping timing in sync with other VoIP peers and the PSTN.
   It might be helpful if you described your specific setup (phones,
server hardware, PSTN connection, etc). Assuming that you haven't made
any mistakes on the Asterisk end, the problem sounds like it might be
with external devices that you're using.

-DG

Dr. David G. Lawrence
President
Download Technologies, Inc. - http://www.downloadtech.com - (866) 399 8500
The FreeBSD Project - http://www.freebsd.org
Pave the road of life with opportunities.



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