I am setting up Kamailio as an SBC and freeswitch to handle vm and conferences. When I dial 41 Kamailio sends the call to FS and I get the VM prompts, but when I dial 43 the call never hits FS. I am looking at FS in the cli and call never comes in. I get "407 proxy authentication required" from my sip client. I am new to Kamailio and cant seem to figure it out. My system is running CentOS 6.4. FS is installed via yum. Kamailio is complied running version 3.0 thanks,