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</v:background></xml><![endif]--><div class=WordSection1><p class=MsoNormal><span style='color:#44546A'>Hi all,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#44546A'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#44546A'>I seem to have fallen off the list! No mail since 7/26/2013. Have I made someone mad?? </span><span style='font-family:Wingdings;color:#44546A'>J</span><span style='color:#44546A'><o:p></o:p></span></p><p class=MsoNormal><span style='color:#44546A'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#44546A'>I have also been blissfully running with ISSUES what so ever since that time.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#44546A'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#44546A'>I have a NATed client with <b>PERIODIC</b> one way audio. The client end has a Cisco 220W router with SIP ALG disabled. The phones are CISCO 504Gs and Polycom 330s(?), basciallt the same as everywhere else we have phones.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#44546A'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#44546A'>I did a sofia global sip trace on for a while and captured the output. After writing an app to sort those sip packets into logical stream files, I dug in to the SIP conversations. This has left me with som questions for the people who know these things:<o:p></o:p></span></p><p class=MsoNormal><span style='color:#44546A'><o:p> </o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='color:#44546A'><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:#44546A'>I found all my phones are REGISTERing every 23 seconds! That seems absurd TO ME, so where have I screwed that up/where do I set it and what is a reasonable number?<br><br><o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='color:#44546A'><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:#44546A'>The only difference I see in the SIP packets from my working phone and these non-working ones is of course NAT related. The working phone’s REGISTER looks like this:<br><br>recv 757 bytes from udp/[<span style='background:yellow;mso-highlight:yellow'>WW.XX.YY.93</span>]:<span style='background:yellow;mso-highlight:yellow'>5063</span> at 17:53:12.164203:<br>------------------------------------------------------------------------ <br>REGISTER sip: <MYDOMAIN.COM> SIP/2.0<br>Via: SIP/2.0/UDP <span style='background:yellow;mso-highlight:yellow'>WW.XX.YY.93</span>:<span style='background:yellow;mso-highlight:yellow'>5063</span>;branch=z9hG4bK-238fcc8b;rport<br><br>But the failing phones look like this:<o:p></o:p></span></p><p class=MsoListParagraph><span style='color:#44546A'><o:p> </o:p></span></p><p class=MsoListParagraph><span style='color:#44546A'>recv 801 bytes from udp/[<span style='background:yellow;mso-highlight:yellow'>AA.BB.CC.38</span>]:<span style='background:yellow;mso-highlight:yellow'>5104</span> at 17:53:40.693691:<o:p></o:p></span></p><p class=MsoListParagraph><span style='color:#44546A'>------------------------------------------------------------------------<o:p></o:p></span></p><p class=MsoListParagraph><span style='color:#44546A'>REGISTER sip: <MYDOMAIN.COM> SIP/2.0<o:p></o:p></span></p><p class=MsoListParagraph><span style='color:#44546A'>Via: SIP/2.0/UDP <span style='background:yellow;mso-highlight:yellow'>10.2.2.239:5104</span>;branch=z9hG4bKb374d6507894B431<o:p></o:p></span></p><p class=MsoListParagraph><span style='color:#44546A'><o:p> </o:p></span></p><p class=MsoListParagraph><span style='color:#44546A'>The response is still sent to [<span style='background:yellow;mso-highlight:yellow'>AA.BB.CC.38</span>]:<span style='background:yellow;mso-highlight:yellow'>5104</span><o:p></o:p></span></p><p class=MsoNormal><span style='color:#44546A'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#44546A'>I guess first, IS THAT A PROBLEM?<o:p></o:p></span></p><p class=MsoNormal><span style='color:#44546A'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#44546A'>So, can anyone share any insight into the CISCO 220W config that I might be missing? <o:p></o:p></span></p><p class=MsoNormal><span style='color:#44546A'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#44546A'>Why would it only be a periodic problem? Could this be a problem where one end is using a wider range of rports than the other supports?<o:p></o:p></span></p><p class=MsoNormal><span style='color:#44546A'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#44546A'>Thanks,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#44546A'>Sean<o:p></o:p></span></p></div>
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