Hello, after fixing my sofia configuration cause of my "invalid transport IP address" problem I got a new problem :( Freeswitch tries to set up a call to my upstream provider on behalf of originating uac. My provider replies with a 407 "Proxy Authentication Required". Freeswitch acknowledges to my provider and sends a 603 "Decline" message back to uac and terminates the call. Looks all quite clean. But ... Shouldn't freeswitch send authentication data to my provider as a response to 407 message? If so, is this data the same as for registration? And further where can I tell freeswitch to do so? regards helmut