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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hello Team<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have the following situation.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>A telecom carrier requires SIP Registration prior to Dial out using SIP Domain and SRV Lookup.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>To achieve that I am using registrant module and load balancing module.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The problem I have, is that in some cases registrant registers on different SBC of the Carrier than the one resolved by Load Balancer Module so my outbound calls are failing with 407.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have two thoughts but I do not know how to implement any of those.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><ol style='margin-top:0cm' start=1 type=1><li class=MsoListParagraph style='margin-left:0cm;mso-list:l0 level1 lfo1'>Instead of using LB Modules, I will some how get the registrar IP from registrant module and statically route the calls through that. Is there a way to get that information from registrant module?<o:p></o:p></li><li class=MsoListParagraph style='margin-left:0cm;mso-list:l0 level1 lfo1'>DNS lookup is done automatically only in case of 503 or timeout. Is there a way to force DNS lookup with in OpenSIP Script? If yes I can handle 407, force DNS Lookup, create a new branch and re-send the call.<o:p></o:p></li></ol><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Any other thoughts are welcome<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Best regards<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Antonis Psaras<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p></div></body></html>