<html><head></head><body bgcolor="#FFFFFF"><div>Start with running an extended "mtr" between the locations.</div><div><br></div><div>Maybe you are dealing with a latency issue.</div><div><br></div><div>I've also seen issues with duplexing.</div><div><br></div><div>So look at low level network issues</div><div><br><br>Sent from my iPhone 4S</div><div><br>On May 11, 2012, at 5:58 PM, Mr Nathan Downes <<a href="mailto:nathandownes@hotmail.com">nathandownes@hotmail.com</a>> wrote:<br><br></div><div></div><blockquote type="cite"><div><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"><meta name="Generator" content="Microsoft Word 14 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--><div class="WordSection1"><p class="MsoNormal">Hi<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">First time trying this mailing list, I have my FS server in a data centre, which feeds site a, site b etc. over a fibre network. We are having really bad call quality issues at one of the sites. The residents report that every second or 2 there is a hiccup in the incoming voice and they miss a portion of the voice. It is consistent and affects everybody. I did some wireshark tracing of both sides of the calls (ext – fs and fs – provider) and to me it appears packets coming from my server have a wrong timestamp every second or so. The server is not over loaded and is pretty default Ubuntu 10.04 LTS, latest FS Head on there. I spent a week trying to diagnose with both the fibre provider and trunk provider but we couldn’t figure out the cause. I then tried putting rtp-rewrite-timestamps in both the profiles (external one to provider, and internal one specifically for fibre company) and the problem appears to have gone away. I would like to figure out what is/was causing the issue and also find out if that option puts any extra overhead on the server. If there is almost no overhead I would probably leave it on and just assume I need I for this specific connection. I don’t have the issue at another site over same fibre network and trunk provider, and people connecting direct over internet don’t suffer same problem. I have about 2gb of wireshark traces I can put online if required.<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">Thanks, Nathan<o:p></o:p></p></div></div></blockquote><blockquote type="cite"><div><span>_________________________________________________________________________</span><br><span>Professional FreeSWITCH Consulting Services:</span><br><span><a href="mailto:consulting@freeswitch.org">consulting@freeswitch.org</a></span><br><span><a href="http://www.freeswitchsolutions.com">http://www.freeswitchsolutions.com</a></span><br><span></span><br><span>FreeSWITCH-powered IP PBX: The CudaTel Communication Server</span><br><span><a href="http://www.cudatel.com">http://www.cudatel.com</a></span><br><span></span><br><span>Official FreeSWITCH Sites</span><br><span><a href="http://www.freeswitch.org">http://www.freeswitch.org</a></span><br><span><a href="http://wiki.freeswitch.org">http://wiki.freeswitch.org</a></span><br><span><a href="http://www.cluecon.com">http://www.cluecon.com</a></span><br><span></span><br><span>FreeSWITCH-users mailing list</span><br><span><a href="mailto:FreeSWITCH-users@lists.freeswitch.org">FreeSWITCH-users@lists.freeswitch.org</a></span><br><span><a href="http://lists.freeswitch.org/mailman/listinfo/freeswitch-users">http://lists.freeswitch.org/mailman/listinfo/freeswitch-users</a></span><br><span>UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users</span><br><span><a href="http://www.freeswitch.org">http://www.freeswitch.org</a></span><br></div></blockquote></body></html>