<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Sounds like a nat issue that their re-invite isnt getting to us. Review what you are sending in sip signaling to make sure they are the correct addresses and nothing in the network is blocking that request.<div class=""><br class=""></div><div class="">Mike</div><div class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Oct 2, 2018, at 1:38 AM, Bipin Patel <<a href="mailto:bipin@xbipin.com" class="">bipin@xbipin.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><font size="-1" style="caret-color: rgb(72, 72, 72); color: rgb(72, 72, 72); font-family: Verdana, sans-serif; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration: none;" class=""><font face="Arial" class="">hi,<br class=""><br class="">im suffering call drops from carrier in roughly 15mins and i reported this to the carrier and they replied with the below:<br class="">If the duration of the call was a multiple of 15 minutes, please make sure that you can properly respond to the keep-alive RE-INVITE that we sends every 15 minutes.<br class=""><br class="">i have no clue on how this works in FS so can any1 point me the right direction on how to sole this, we use FS to route calls from our switch to carrier<br class=""><br class=""></font></font><span style="caret-color: rgb(72, 72, 72); color: rgb(72, 72, 72); font-family: Verdana, sans-serif; font-size: 9.600000381469727px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration: none; display: inline !important; float: none;" class=""></span><div class="moz-signature" style="caret-color: rgb(72, 72, 72); color: rgb(72, 72, 72); font-family: Verdana, sans-serif; font-size: 9.600000381469727px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration: none;">--<span class="Apple-converted-space"> </span><br class="">Regards,<br class="">Bipin<br class=""><br class=""></div></div></blockquote></div><br class=""></div></body></html>