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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hello Ali,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">I think we had the similar problem. Then we found the S-CSCF configuration file contains following snippet in main routing block:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> if ((<b><span style="color:red">$route_uri =~ "sip:orig@.*"</span></b>) || isc_from_as("orig")) {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> xlog("Orig");<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> # we need something like this to assign SCSCF to unregistered user for services<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> # support for AS origination on behalf of unregistered useri<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> # can use the registrar is_registered methods - must see if we need to check orig or term?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> # Originating<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> route(orig);<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> break;
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> } else {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">And we understood, if the AS originates an initial Request (as opposed to forwarding it), then the S-CSCF should act as an originating S-CSCF, too.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">So the AS that performs an “originating, unregistered” service, must add a “Route” header with the indication of origin, e.g.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR" style="mso-fareast-language:EN-US"> Route: <sip:<b><u>orig</u></b>@172.23.12.249:5060;lr><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">To address the originating S-CSCF.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Just my two cent.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">KR,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Christoph<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="DE">From:</span></b><span lang="DE"> sr-users <sr-users-bounces@lists.kamailio.org>
<b>On Behalf Of </b>Ali Shirvani<br>
<b>Sent:</b> Wednesday, July 24, 2019 2:49 PM<br>
<b>To:</b> Kamailio (SER) - Development Mailing List <sr-dev@lists.kamailio.org><br>
<b>Cc:</b> Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org><br>
<b>Subject:</b> Re: [SR-Users] [sr-dev] IMS_ISC technical specification<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hello Mojtaba,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks for your reply. You are completely correct, my current configuration work fine when request initiated from UEs, but I want to handle SIP requests that initiated by application server.<o:p></o:p></p>
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<p class="MsoNormal">When UE sends request to S-CSCF, kamailio fetch iFC from HSS and check if the request match with iFC or not, if it matched kamailio forward the request to the application server.<o:p></o:p></p>
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<p class="MsoNormal">But when application server send request to S-CSCF, isc_from_as('orig') return false and I couldn't forward request to the target UE.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Regards,<o:p></o:p></p>
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<p class="MsoNormal">Ali<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Wed, Jul 24, 2019 at 3:45 PM Mojtaba <<a href="mailto:mespio@gmail.com">mespio@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hello Ali,<o:p></o:p></p>
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<p class="MsoNormal">The SCSCF has IFC service for decision what it should do with incoming SIP message. During check all rules in IFC, If it match with one or some rules, actually it marked with that rules. Then the real meaning of marking is the SIP message
is matched with one or some rules in IFC.<o:p></o:p></p>
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<p class="MsoNormal">With Best Regards.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Wed, Jul 24, 2019 at 2:48 PM Ali Shirvani <<a href="mailto:aj.shirvani@gmail.com" target="_blank">aj.shirvani@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hi all,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I read some portion of imc_isc_mod.c, specially isc_from_as function. In that function there is some function call that searching for some marks in the SIP message. Also I read section 5.7.3 from TS 24.229 but I didn't find the marking
mechanism that used in isc_from_as function.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Would you please point me to the technical specification that implemented in IMS_ISC module?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Regards,<o:p></o:p></p>
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<p class="MsoNormal">Ali<o:p></o:p></p>
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<p class="MsoNormal">_______________________________________________<br>
Kamailio (SER) - Development Mailing List<br>
<a href="mailto:sr-dev@lists.kamailio.org" target="_blank">sr-dev@lists.kamailio.org</a><br>
<a href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev" target="_blank">https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev</a><o:p></o:p></p>
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<p class="MsoNormal"><br clear="all">
<br>
-- <o:p></o:p></p>
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<p class="MsoNormal">--Mojtaba Esfandiari.S<o:p></o:p></p>
</div>
<p class="MsoNormal">_______________________________________________<br>
Kamailio (SER) - Development Mailing List<br>
<a href="mailto:sr-dev@lists.kamailio.org" target="_blank">sr-dev@lists.kamailio.org</a><br>
<a href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev" target="_blank">https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev</a><o:p></o:p></p>
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