Hi   Relevent section of the config similiar to below.   Incoming invite is sent to a redirect server, 300 reply is sent back. failure_route catches the '300' applies t_drop_replies(); and creates a new invite to host NEW_ADDRESS.   The issue I am facing - at this point when a CANCEL is received a '200' is sent back to the requester however it does get notified to the current  invite which remains processing   ...   if (is_method("CANCEL")) {     if (t_check_trans()) {             t_relay();     }     exit;   ...   failure_route[FAIL] {     if (t_check_status("300")) {         t_drop_replies();         rewritehost(NEW_ADDRESS);         t_relay();      }  }     _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users