diff --git a/app/basic_operator_panel/index.php b/app/basic_operator_panel/index.php
index 658844af48..b7fc652700 100644
--- a/app/basic_operator_panel/index.php
+++ b/app/basic_operator_panel/index.php
@@ -115,7 +115,7 @@
 						foreach($_SESSION['user']['extension'] as $row) {
 							//build the array
 							$array['extensions'][$x]['extension_uuid'] = $row['extension_uuid'];
-							$array['extensions'][$x]['dial_string'] = 'error/user_busy';
+							$array['extensions'][$x]['dial_string'] = '!USER_BUSY';
 							$array['extensions'][$x]['do_not_disturb'] = 'true';
 
 							//delete extension from the cache
diff --git a/app/extensions/extension_edit.php b/app/extensions/extension_edit.php
index 2df0661f24..cced4ca7c3 100644
--- a/app/extensions/extension_edit.php
+++ b/app/extensions/extension_edit.php
@@ -893,7 +893,7 @@
 	if (strlen($max_registrations) == 0) { $max_registrations = $_SESSION['extension']['max_registrations']['numeric']; }
 	if (strlen($accountcode) == 0) { $accountcode = get_accountcode(); }
 	if (strlen($limit_max) == 0) { $limit_max = '5'; }
-	if (strlen($limit_destination) == 0) { $limit_destination = 'error/user_busy'; }
+	if (strlen($limit_destination) == 0) { $limit_destination = '!USER_BUSY'; }
 	if (strlen($call_timeout) == 0) { $call_timeout = '30'; }
 	if (strlen($call_screen_enabled) == 0) { $call_screen_enabled = 'false'; }
 	if (strlen($user_record) == 0) { $user_record = $_SESSION['extension']['user_record_default']['text']; }
diff --git a/app/scripts/resources/scripts/app/feature_event/index.lua b/app/scripts/resources/scripts/app/feature_event/index.lua
index 95ec5edf72..68fa615747 100644
--- a/app/scripts/resources/scripts/app/feature_event/index.lua
+++ b/app/scripts/resources/scripts/app/feature_event/index.lua
@@ -123,7 +123,7 @@
 		--DND enabled
 			if (feature_action == "SetDoNotDisturb" and feature_enabled == "true") then
 				--set a variable
-					dial_string = "error/user_busy";
+					dial_string = "!USER_BUSY";
 					do_not_disturb = "true";
 
 				--update the extension
diff --git a/app/scripts/resources/scripts/app/xml_handler/resources/scripts/directory/directory.lua b/app/scripts/resources/scripts/app/xml_handler/resources/scripts/directory/directory.lua
index 7d2c155859..a050cbc81c 100644
--- a/app/scripts/resources/scripts/app/xml_handler/resources/scripts/directory/directory.lua
+++ b/app/scripts/resources/scripts/app/xml_handler/resources/scripts/directory/directory.lua
@@ -381,7 +381,7 @@
 
 							--set the dial_string
 								if (do_not_disturb == "true") then
-									dial_string = "error/USER_BUSY";
+									dial_string = "!USER_BUSY";
 								elseif (string.len(row.dial_string) > 0) then
 									dial_string = row.dial_string;
 								else
diff --git a/app/scripts/resources/scripts/do_not_disturb.lua b/app/scripts/resources/scripts/do_not_disturb.lua
index bb70185552..c7b6c115fa 100644
--- a/app/scripts/resources/scripts/do_not_disturb.lua
+++ b/app/scripts/resources/scripts/do_not_disturb.lua
@@ -172,7 +172,7 @@
 	sql = "update v_extensions set ";
 	if (enabled == "true") then
 		sql = sql .. "follow_me_enabled = 'false', ";
-		sql = sql .. "dial_string = 'error/user_busy', ";
+		sql = sql .. "dial_string = '!USER_BUSY', ";
 		sql = sql .. "do_not_disturb = 'true', ";
 		sql = sql .. "forward_all_enabled = 'false' ";
 	else