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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi all<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Follow scenario<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">Class5 system [c5] </span><span lang="EN-US" style="font-family:Wingdings">à</span><span lang="EN-US"> Loadbalancer kamailio (dispatcher module) [lbl] -</span><span style="font-family:Wingdings">à</span><span lang="EN-US">
gateway kamailio [gw] </span><span lang="EN-US" style="font-family:Wingdings">à</span><span lang="EN-US"> carrier [carr]<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">I get Invites from [c5] with<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Request ,To, from, contact, pid in national format 0794445566<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">[lbl] dispatches this to [gw]<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">For the [carr] I need international format.<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">So doing these transactions in [gw]<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">And sending to [carr] in international format<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">Request, to, from, contact, … => 417794445566<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Everything ok<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">Then I get a 100, 183 and even 200 from [carr]<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Ack is coming from [c5] to [lbl] and [gw] – but then it stocks<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">The ACK is not sent to the [carr]<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">I kamailio log I see<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">DEBUG: RFC3261 transaction matching failed<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">DEBUG: t_lookup_request: no transaction found<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">So for me, the ACK cannot be assigned to a transaction and gets discarded by
<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">if ( is_method("ACK") ) {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> xlog(,"L_INFO", "WITHINDLG ACK - not loose route\n");<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> if ( t_check_trans() ) {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> xlog(,"L_INFO", "WITHINDLG ACK - t_check_trans() \n");
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> # no loose-route, but stateful ACK;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> # must be an ACK after a 487<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> # or e.g. 404 from upstream server<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> t_relay();<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> exit;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> } else {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> xlog(,"L_INFO", "WITHINDLG ACK - not t_check_trans() DISCARD!!\n");
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> # ACK without matching transaction ... ignore and discard<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> route(NATMANAGE);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> #t_relay();<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> #exit;<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>
<p class="MsoNormal"><span lang="EN-US">Any idea?<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">Problem with modifying the sip tags? Or problem with the dialog?<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">Thanks for helping<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">OIi<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>
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