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<div class=Section1>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Javier,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>reInvites would have to be generated by some dialog stateful
component of the call.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Depending on your network setup, this could be either endpoints
or some B2BUA in the middle.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>openSER is not dialog stateful (openSER is transaction stateful
) and thusly cannot generate reInvites.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hope this helps<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>T.R.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #91C0FF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:9.0pt;font-family:"Segoe UI","sans-serif"'>From:</span></b><span
style='font-size:9.0pt;font-family:"Segoe UI","sans-serif"'>
users-bounces@openser.org [mailto:users-bounces@openser.org] <b>On Behalf Of </b>Javier
Ramirez<br>
<b>Sent:</b> Friday, June 23, 2006 11:28 AM<br>
<b>To:</b> Bogdan-Andrei Iancu<br>
<b>Cc:</b> users<br>
<b>Subject:</b> Re: [Users] keep alive using RE-INVITE<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:blue'> </span> <o:p></o:p></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:blue'>Bogdan, I don't understand how to make this with openser.</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:blue'>but I understand the keepalive mechanism</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:blue'>can you help me?</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:blue'>best regards</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:blue'>Javier Ramirez</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
</div>
<blockquote style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>-----
Original Message ----- <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal style='background:#E4E4E4'><b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>From:</span></b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'> <a href="mailto:bogdan@voice-system.ro"
title="bogdan@voice-system.ro">Bogdan-Andrei Iancu</a> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>To:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <a
href="mailto:jvr_78@yahoo.com.ar" title="jvr_78@yahoo.com.ar">Javier Ramirez</a>
<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sent:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> Wednesday, June 21,
2006 1:35 PM<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Subject:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> Re: [Users] keep
alive using RE-INVITE<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'>Javier,<br>
<br>
I guess the RFC3261 or google (SIP + reINVITE) are the best source for <br>
looking into.<br>
<br>
regards,<br>
bogdan<br>
<br>
Javier Ramirez wrote:<br>
<br>
> Bogdan,<br>
> I read that a lot of person use the RE-INVITE to keepalive the call<br>
> but I donīt understand this.<br>
> please, can you help me ?<br>
> best regards<br>
> Javier Ramirez<br>
> <br>
><br>
> ----- Original Message -----<br>
> *From:* Bogdan-Andrei Iancu <<a
href="mailto:bogdan@voice-system.ro">mailto:bogdan@voice-system.ro</a>><br>
> *To:* Javier Ramirez <<a
href="mailto:jvr_78@yahoo.com.ar">mailto:jvr_78@yahoo.com.ar</a>><br>
> *Cc:* <a href="mailto:users@openser.org">users@openser.org</a>
<<a href="mailto:users@openser.org">mailto:users@openser.org</a>><br>
> *Sent:* Thursday, June 08, 2006 7:14 AM<br>
> *Subject:* Re: [Users] keep alive using RE-INVITE<br>
><br>
> Hi Javier,<br>
><br>
> this is quite impossible to do - by sending
re-INVITEs from a middle<br>
> point, you will break the CSEQ consistency between
the end points.<br>
> Within the dialog, the cseq must increase from
message to message<br>
> - if<br>
> you send a re-invite to point A with cseq n+1,
after a while point<br>
> B may<br>
> sent a request with the same cseq since it was not
aware that some<br>
> party<br>
> in the middle changed the number.<br>
><br>
> the best way to do it is if you have a end2end
keepalive mechanism as<br>
> Session-Timer.<br>
><br>
> regards,<br>
> bogdan<br>
><br>
> Javier Ramirez wrote:<br>
><br>
> > Hi !<br>
> > I looking for a mechanism to keep alive, and
I see that is used the<br>
> > RE-INVITE, but<br>
> > How to use the Re-INVITE to a keep alive
mechanism ?<br>
> > exist another way to implement another keep
alive mechanism ?<br>
> > <br>
> > best regards<br>
> > Javier ramirez<br>
> ><br>
>
>------------------------------------------------------------------------<br>
> ><br>
> >_______________________________________________<br>
> >Users mailing list<br>
> ><a href="mailto:Users@openser.org">Users@openser.org</a><br>
> ><a
href="http://openser.org/cgi-bin/mailman/listinfo/users">http://openser.org/cgi-bin/mailman/listinfo/users</a><br>
> > <br>
> ><br>
><br>
><br>
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</blockquote>
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