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</o:shapelayout></xml><![endif]--></head><body lang=EN-MY link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>Hi All,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#17365D'>We are facing few problems, when device A register itself on OpenSIPS server with timeout=600 in UDP transmission, after few seconds device disconnects from internet due to any issue, internet unavailability or device shutdown. Its registration maintain at server till it timeout. Meanwhile any user trying to message to that particular user will fails. We are sending keep alive packets after every 50 seconds on wifi and 20 seconds on 3G. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#17365D'>What we want is that if the server does not receive keep alive packets from that particular user it should expire the registration. So what parameters should be set to achieve this ? Any guidance will be appreciate.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>-Thanks<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#1F497D'>Rajesh<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>