On 31 Jul 2006, at 22:11, Jerry Geis wrote:
Help please. I have two systems on the net.
one in indiana and one in georgia.
connected with IAX. local SIP phones in each office (10 each) are
cisco and running sip.
TDM04B card in each location has 4 local lines.
Incoming calls to each location sound fine always.
The problem is dialing between offices the call quality is BAD.
Both offices are connected to the net with T1 lines. all data.
All phones are setup ulaw 64bit. The IAX connection between the
boxes is ulaw 64 bit.
I tried skype between the two offices and talked for 15 minutes and
had no issue.
The machine CPU usage is running 92-97% idle most of the time.
Running asterisk 1.2.9.1 and zaptel 1.2.6.
There are switches in the mix that have voice traffic having priority.
How do I determine what is the issue here? Why is the call quality
bad and where is
it that I can tweek.
How have you configured your switches/routers to give voice priority?
Do those rules cover IAX (UDP port 4569)?
To see what asterisk thinks the problem is you can look at
iax2 show netstats
(from memory - I'm off net as I write this)
It tells you how many dropped/late/jittered packets it has seen at
each end.
You probably want to enable the new jitterbuffer (at both ends) if
you have not yet.
Tim Panton
www.mexuar.com
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