Hello List, I have a working setup with a kamailio + freeswitch where i can register extension and make succesfull calls between them. I added now a "external" path for outbound call to which i can successfully route using the dialplan + dispatcher combo. My problem is that my outbound path requires authentication and i'm struggling to find a way to successfully authenticate with the remote end. I configured the UAC module to register against the remote end with a set of credentials but in the SIP trace i can see that the kamailio simply uses the local user credentials instead of the external ones. I believe that this is because the 401 Unauthorized from the carrier gets proxied to the extension which responds with its own credentials. Can anybody suggest how can i stop forwarding them in this case to extension and instead use the UAC to reply with different set of credentials? Regards, Krzysztof The config: request_route { ... if($rU=~"[0-9]{5,}"){     xlog("L_INFO","Looking up route for $rU\n");     dp_match("1", "$rU");     $var(dsid) = $(var(attrs){s.int});     if(!ds_select_dst("$var(dsid)", "4")) {         send_reply("404", "No destination");         exit;     }     if(!ds_select_domain("$var(dsid)", "4")) {         send_reply("404", "No destination");         exit;     }     xlog("L_INFO", "Looking up $fn in database\n");     $avp(s:auth_realm_avp) = "realm.com";     $avp(s:auth_username_avp) = "username";     $avp(s:auth_password_avp) = "password";     if(uac_reg_request_to("$fn", 1)) {         xlog("L_INFO", "Found remote user [$rU] on [$rd] via [$du]");         t_on_failure("REMOTE_AUTH");         xlog("L_INFO", "going to <$ru> via <$du>\n");         route(RELAY);     }     exit; } failure_route[REMOTE_AUTH] {         if ($T_reply_code == 401 or $T_reply_code == 407) {                 xlog("L_INFO", "Remote asked for authentication");                 uac_auth();         } } -- PGP: 9E5D E635 5A03 485C 2E00 4530 EB83 920A 9E21 FBA8