<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Philippe,<div><br></div><div>can you confirm there is no NAT Keepalive feature in the Aastra ?</div><div>That's quite weird.</div><div><br></div><div><div>
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<br><div><div>Le 10/02/2011 à 11:39, Philippe Sultan a écrit :</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Tim,<br><br>That helped a lot, thanks! More comments inline.<br><br>On Thu, Feb 10, 2011 at 3:18 AM, Tim St. Pierre<br><<a href="mailto:fs-list@communicatefreely.net">fs-list@communicatefreely.net</a>> wrote:<br><blockquote type="cite">I'm wondering about these values:<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><blockquote type="cite">sip registration retry timer: 10<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">sip registration renewal timer: 15<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">sip registration timeout retry timer: 10<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">sip registration period: 60<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">sip rport: 1<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite">They seem a bit short, especially on a LAN. Do you really need your<br></blockquote><blockquote type="cite">phones to re-register every 45 seconds?<br></blockquote><br>Indeed, I don't. But need a mechanism to keep NAT sessions alive in<br>case phones are being deployed behind NAT boxes. It seems like<br>transporting SIP over TCP from the phone, plus using TCP keepalives<br>will solve that issue though. I also have Thomson ST2030 phones, and<br>they send SIP OPTIONS packets every 50 seconds for that purpose (all<br>handled by the SER proxy).<br><br><blockquote type="cite">Try setting sip registration period to 600 That's 10 minutes.<br></blockquote><blockquote type="cite">sip registration renewal timer can be a bit longer - 30 seconds maybe,<br></blockquote><blockquote type="cite">or 60 if you are at all worried about reliability.<br></blockquote><br>Here is what I put in the aastra.cfg file from your suggestions :<br><br>sip registration period: 3600<br>sip registration renewal timer: 3565<br><br>And that does the trick, that is, the phone registers every 45<br>seconds. I'll try to update those values to have a larger registration<br>period, rely on TCP keepalives in order to maintain NAT sessions, and<br>have all that NAT handling in SER. Here is the topology :<br><br>Aastra ---(sip/tcp)--- SER ---(sip/udp)--- FS<br><br>ST2030 ---(sip/udp)--- SER ---(sip/udp)--- FS<br><br>Thanks again!<br><br>Philippe<br><br>_______________________________________________<br>FreeSWITCH-users mailing list<br><a href="mailto:FreeSWITCH-users@lists.freeswitch.org">FreeSWITCH-users@lists.freeswitch.org</a><br>http://lists.freeswitch.org/mailman/listinfo/freeswitch-users<br>UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users<br>http://www.freeswitch.org<br></div></blockquote></div><br></div></body></html>