[SR-Users] Problem implementing Outbound Proxy

Hi all, im currently trying to add a Outbound Proxying to our system which right now does inbound loadbalancing for our application servers. Current: Inbound SIP Trunk -> Kamailio -> dispatcher -> ApplicationServer 1..n i now want to add the ability for our internal Application Servers to terminate their outbound calls through the kamailio system. currently i've setup a gateway in the (freeswitch) application server that has the kamailio system set as outbound-proxy. this leads to sip calls started with originate sofia/gateway/kamailio/<number>@<outbound carrier IP> to be sent to the kamailio system which then forwards it to the given carrier IP. Sadly our main carrier answers with "503 service unavailable - no bandwith available". (maybe due to the internal ip-addresses within some of the headers?) i've attached our current kamailio configuration and also a pcap of a call i tried to start with our main carrier. i tried this way as it seemed to be the easiest way so our application servers still can select the outbound carrier within their flow. maybe i'm on the wrong way here and need to solve this problem in a completely different way i don't know. TLDR: sip proxying does not work as expected. need a way to achieve outbound calls routed through kamailio from internal application servers any hint/help into the right direction is appreciated Best Regards Christoph Russow -- ________________________________________________________________ EMTEX GmbH Christoph Russow Software Engineer Bischof-Otto-Weg 9 D-91086 Aurachtal Geschäftsführer: Markus Enzinger Tel. +49 9132 7490 0 Sitz der Gesellschaft: 91086 Aurachtal Fax. +49 9132 7490 900 Amtsgericht Fürth: HRB6804 ________________________________________________________________