<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Have you looked at a debug log when this is happening to see what FreeSWITCH thinks is going on?<div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Oct 27, 2016, at 7:14 AM, devang nathwani <<a href="mailto:devang.nathwani31589@gmail.com" class="">devang.nathwani31589@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div class=""><div class=""><div class=""><div class=""><div class=""><div class=""><div class=""><div class=""><div class="">Hello,<br class=""><br class=""></div>Freeswitch version: 1.6.11<br class=""></div><div class="">Number of registration on my switch: 270+<br class=""></div><div class="">Ram: 4 GB, 1 GB is free; 64 bit debian 8<br class=""></div><br class=""></div>I am facing this issue, where some time i am getting continuous INVITE registration requests but freeswitch not responding to it<br class=""><br class=""></div>and sometime i am getting 503 service unavailable<br class=""><br class=""></div></div>I have gone though <a href="https://freeswitch.org/jira/si/jira.issueviews:issue-html/FS-6589/FS-6589.html" class="">https://freeswitch.org/jira/si/jira.issueviews:issue-html/FS-6589/FS-6589.html</a> as well but not finding much helpful.<br class=""><br class=""></div>here is the sip log for the same, if you want to go through.<br class=""><a href="http://pastebin.com/PXz277XD" class="">http://pastebin.com/PXz277XD</a><br class=""><br class=""></div><div class="">Is RAM upgrade a solution? or any other?<br class=""></div></div></div></div></blockquote></div><br class=""></div></body></html>