diff --git a/resources/install/scripts/app/xml_handler/resources/scripts/directory/action/reverse-auth-lookup.lua b/resources/install/scripts/app/xml_handler/resources/scripts/directory/action/reverse-auth-lookup.lua
new file mode 100644
index 0000000000..c7bf1b1569
--- /dev/null
+++ b/resources/install/scripts/app/xml_handler/resources/scripts/directory/action/reverse-auth-lookup.lua
@@ -0,0 +1,76 @@
+--	xml_handler.lua
+--	Part of FusionPBX
+--	Copyright (C) 2013 Mark J Crane <markjcrane@fusionpbx.com>
+--	All rights reserved.
+--
+--	Redistribution and use in source and binary forms, with or without
+--	modification, are permitted provided that the following conditions are met:
+--
+--	1. Redistributions of source code must retain the above copyright notice,
+--	   this list of conditions and the following disclaimer.
+--
+--	2. Redistributions in binary form must reproduce the above copyright
+--	   notice, this list of conditions and the following disclaimer in the
+--	   documentation and/or other materials provided with the distribution.
+--
+--	THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+--	INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+--	AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+--	AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+--	OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+--	SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+--	INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+--	CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+--	ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+--	POSSIBILITY OF SUCH DAMAGE.
+
+--get the action
+	action = params:getHeader("action");
+	purpose = params:getHeader("purpose");
+		--sip_auth - registration
+		--group_call - call group has been called
+		--user_call - user has been called
+
+--get the extension information
+	sql = "SELECT * FROM v_extensions WHERE domain_uuid = '" .. domain_uuid .. "' and (extension = '" .. user .. "' or number_alias = '" .. user .. "') and enabled = 'true' ";
+	if (debug["sql"]) then
+		freeswitch.consoleLog("notice", "[xml_handler] SQL: " .. sql .. "\n");
+	end
+	dbh:query(sql, function(row)
+		--general
+			domain_uuid = row.domain_uuid;
+			extension_uuid = row.extension_uuid;
+			extension = row.extension;
+			cidr = "";
+			if (string.len(row.cidr) > 0) then
+				cidr = [[ cidr="]] .. row.cidr .. [["]];
+			end
+			number_alias = "";
+			if (string.len(row.number_alias) > 0) then
+				number_alias = [[ number-alias="]] .. row.number_alias .. [["]];
+			end
+		--params
+			password = row.password;
+	end);
+
+--build the xml
+	local xml = {}
+	--table.insert(xml, [[<?xml version="1.0" encoding="UTF-8" standalone="no"?>]]);
+	table.insert(xml, [[<document type="freeswitch/xml">]]);
+	table.insert(xml, [[	<section name="directory">]]);
+	table.insert(xml, [[		<domain name="]] .. domain_name .. [[" alias="true">]]);
+	table.insert(xml, [[			<user id="]] .. extension .. [[">]]);
+	table.insert(xml, [[				<params>]]);
+	table.insert(xml, [[					<param name="reverse-auth-user" value="]] .. extension .. [["/>]]);
+	table.insert(xml, [[					<param name="reverse-auth-pass" value="]] .. password .. [["/>]]);
+	table.insert(xml, [[				</params>]]);
+	table.insert(xml, [[			</user>]]);
+	table.insert(xml, [[		</domain>]]);
+	table.insert(xml, [[	</section>]]);
+	table.insert(xml, [[</document>]]);
+	XML_STRING = table.concat(xml, "\n");
+
+--send the xml to the console
+	if (debug["xml_string"]) then
+		freeswitch.consoleLog("notice", "[xml_handler] XML_STRING: \n" .. XML_STRING .. "\n");
+	end
\ No newline at end of file
diff --git a/resources/install/scripts/app/xml_handler/resources/scripts/directory/directory.lua b/resources/install/scripts/app/xml_handler/resources/scripts/directory/directory.lua
index ec5fe25aa2..5ad4490d78 100644
--- a/resources/install/scripts/app/xml_handler/resources/scripts/directory/directory.lua
+++ b/resources/install/scripts/app/xml_handler/resources/scripts/directory/directory.lua
@@ -44,6 +44,8 @@
 		dofile(scripts_dir.."/app/xml_handler/resources/scripts/directory/action/message-count.lua");
 	elseif (action == "group_call") then
 		dofile(scripts_dir.."/app/xml_handler/resources/scripts/directory/action/group_call.lua");
+	elseif (action == "reverse-auth-lookup") then
+		dofile(scripts_dir.."/app/xml_handler/resources/scripts/directory/action/reverse-auth-lookup.lua");
 	elseif (params:getHeader("Event-Calling-Function") == "switch_xml_locate_domain") then
 		dofile(scripts_dir.."/app/xml_handler/resources/scripts/directory/action/domains.lua");
 	else