Hi Gavin, This error is generated internally when trying to relay the message. A useful troubleshooting step would be to add a line that prints the Request URI to console before this happens, but subsequent to the registration lookup (if you're using a registrar, and I presume you are): xinfo("[$ci] Final request URI is: $ru\n"); I think this would add some insight. -- Alex -- Alex Balashov Principal Consultant Evariste Systems LLC Web: https://evaristesys.com Tel: +1-706-510-6800

Hi, Check on your Kamailio.cfg if this response is set. Most of the responses to SIP messages are setted in this file. Also I’m not sure if it’s related to this, but usually 479 is related to bad registrations. Check in your BBDD if there’s a user that matches your extension’s name Hope this helps Good luck De: Gavin Baumanis via sr-users <sr-users(a)lists.kamailio.org> Enviado el: sábado, 16 de diciembre de 2023 15:34 Para: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org> CC: Gavin Baumanis <gavin.baumanis(a)cyara.com> Asunto: [SR-Users] Regretfully we were unable to process the URI Hi Everyone, Very new to SIP And to Kamailio Configuration / administration. I have a working AWS instance with Kamailio installed on it - and it works fine. We are creating a whole new environment and I have cloned the existing AWS EC2 instances. I have edited all the configs to ensure that they are using the correct DNS names and / or IP addresses. Otherwise the "configs" are identical. While attempting to call a SIP number, I get the following message, returned to the soft phone I am using (microSIP) Regretfully we were unable to process the URI (479/SL) I can also see the same error message in the console of the Kamailio server. I am hoping that this might mean something to someone enough - to suggest some troubleshooting steps, please. Thanks;