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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hello,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We need to integrate Kamailio with an exchange switch in order to have routing decision.<o:p></o:p></p><p class=MsoNormal>Kamailio must send to the switch the list of available gateways in the contact tag of SIP response as shown in the below example:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-family:"Courier New"'>SIP/2.0 300 Multiple choices</span><o:p></o:p></p><p class=MsoNormal><span style='font-family:"Courier New"'>Via: SIP/2.0/UDP 172.16.5.112:5060;branch=z9hG4bK1sansay9906915rdb2243</span><o:p></o:p></p><p class=MsoNormal><span style='font-family:"Courier New"'>Via: SIP/2.0/UDP 216.53.4.5:5060;branch=z9hG4bK_1852370774_4741_1</span><o:p></o:p></p><p class=MsoNormal><span style='font-family:"Courier New"'>To: <<a href="http://sip:86532917453592@69.41.186.186:5060">sip:86532917453592@69.41.186.186:5060</a>></span><o:p></o:p></p><p class=MsoNormal><span style='font-family:"Courier New"'>From: <<a href="sip:+249964642906@216.53.4.5:5060;otg=024050">sip:+249964642906@216.53.4.5:5060;otg=024050</a>>;tag=1852370774_C</span><o:p></o:p></p><p class=MsoNormal><span style='font-family:"Courier New"'>Call-ID: sbcsipuac.2_169.132.137.51_b55sb12_1_1_2015052909455960_1852370774_487698</span><o:p></o:p></p><p class=MsoNormal><span style='font-family:"Courier New"'>CSeq: 1 INVITE</span><o:p></o:p></p><p class=MsoNormal><span style='font-family:"Courier New"'>Contact: <b><span style='color:red;background:yellow'><<a href="sip:2917453592@036310">sip:2917453592@036310</a>>, <<a href="sip:2917453592@016500">sip:2917453592@016500</a>>, <<a href="sip:138295#2917453592@044610">sip:138295#2917453592@044610</a>>, <<a href="sip:2917453592@020100">sip:2917453592@020100</a>></span></b></span><o:p></o:p></p><p class=MsoNormal><span style='font-family:"Courier New"'>Server: Invoice SIP-server</span><o:p></o:p></p><p class=MsoNormal><span style='font-family:"Courier New"'>Content-Length: 0</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Is this can be done through drouting module , or we need to use another module ?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Your help is highly appreciated.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Regards,<o:p></o:p></p><p class=MsoNormal>Ali<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>