diff --git a/app/dialplan/resources/switch/conf/dialplan/490_do-not-disturb.xml b/app/dialplan/resources/switch/conf/dialplan/490_do-not-disturb.xml
index d4943722e6..63bfbeabf5 100644
--- a/app/dialplan/resources/switch/conf/dialplan/490_do-not-disturb.xml
+++ b/app/dialplan/resources/switch/conf/dialplan/490_do-not-disturb.xml
@@ -1,5 +1,9 @@
 <context name="{v_context}">
-	<extension name="do-not-disturb" number="*78,*79" continue="false" app_uuid="df32d982-e39e-4ae5-a46d-aed1893873f2" enabled="true">
+	<extension name="do-not-disturb" number="*77,*78,*79" continue="false" app_uuid="df32d982-e39e-4ae5-a46d-aed1893873f2" enabled="true">
+		<condition field="destination_number" expression="^\*77$" break="on-true">
+			<action application="set" data="enabled=toggle"/>
+			<action application="lua" data="do_not_disturb.lua"/>
+		</condition>
 		<condition field="destination_number" expression="^\*78$|\*363$" break="on-true">
 			<action application="set" data="enabled=true"/>
 			<action application="lua" data="do_not_disturb.lua"/>
@@ -9,4 +13,4 @@
 			<action application="lua" data="do_not_disturb.lua"/>
 		</condition>
 	</extension>
-</context>
\ No newline at end of file
+</context>