Hi Aidar,I believe $rc is the return code of the last function called (ref https://www.kamailio.org/wiki/cookbooks/4.4.x/ )pseudovariables#rc_-_returned_ code In your example you call xwarn() and then test $rc… so by the time you test $rc it is no longer the result of the lookup() function.Try storing $rc in a $var before calling xwarn() instead and see if it works the way you expect it to:if (!lookup("location")) {$var(rc) = $rc;xwarn("method ($rm) r-uri ($ru)\n"); ################## HERE ##########################route(TOVOICEMAIL);t_newtran();switch ($var(rc)) {case -1:case -3:send_reply("404", "Not Found");exit;case -2:send_reply("405", "Method Not Allowed");exit;}}Paul Smith