diff --git a/resources/templates/provision/yealink/t23g/y000000000044.cfg b/resources/templates/provision/yealink/t23g/y000000000044.cfg
index 0f410699e7..a0031039b2 100644
--- a/resources/templates/provision/yealink/t23g/y000000000044.cfg
+++ b/resources/templates/provision/yealink/t23g/y000000000044.cfg
@@ -673,8 +673,8 @@ features.fwd_diversion_enable =
 #######################################################################################
 #Configure the DND key mode; 0-Phone mode (default), 1-Custom mode.
 features.dnd_mode =
-features.dnd.on_code =
-features.dnd.off_code =
+features.dnd.on_code = *78
+features.dnd.off_code = *79
 features.dnd.emergency_enable = 1
 features.dnd.emergency_authorized_number =