diff --git a/resources/templates/provision/yealink/t43u/y000000000107.cfg b/resources/templates/provision/yealink/t43u/y000000000107.cfg
index 5dc9e1125e..2a3e7eaf7f 100644
--- a/resources/templates/provision/yealink/t43u/y000000000107.cfg
+++ b/resources/templates/provision/yealink/t43u/y000000000107.cfg
@@ -1168,8 +1168,13 @@ features.dnd.allow=
 features.dnd_mode=
 features.dnd.enable=
 
+{if isset($yealink_feature_key_sync) && $yealink_feature_key_sync == "1"}
+features.dnd.off_code =
+features.dnd.on_code =
+{else}
 features.dnd.off_code = *79
 features.dnd.on_code = *78
+{/if}
 
 features.dnd.emergency_authorized_number=
 features.dnd.emergency_enable = 1