In addition to this problem I made some tcpdumps to check what sipXecs is actually sending…
I noticed this call which I attached as a part of my dump. I see normal behavior, until sipXecs is not responding to the ACK on the OK message…. I takes half a second for sipXecs to put this ACK through to the phone… Any idea why sipXecs is causing this delay? Greetings, Henry From: sipx-users-boun...@list.sipfoundry.org [mailto:sipx-users-boun...@list.sipfoundry.org] On Behalf Of Henry Dogger Sent: woensdag 15 juni 2011 15:25 To: Discussion list for users of sipXecs software Subject: [sipx-users] some lag when answering phone Hi all, I noticed some lag on our production system, when picking up the phone. When I answer the phone it takes a second before the other side can hear me… I tried to reproduce on our test environment but there was only a slight lag (0.2s) from the phone. I made traces on both systems, and I noticed a difference… On my production system the ACK after the OK is held by the proxy for half a second, apparently the phone does not get this, and the proxy sends another one half a second behind the first attempt. I do not see this behavior on our test system. I attached the traces, does anyone know what could cause this? Using sipXecs-4.2.1 both systems are setup identically. Kind regards, Henry Dogger Telecats BV
sipx-net-trace-110628T134018partial.pcap
Description: sipx-net-trace-110628T134018partial.pcap
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