diff --git a/app/yealink/app_config.php b/app/yealink/app_config.php
index 983e0478c7..73f74ff29e 100644
--- a/app/yealink/app_config.php
+++ b/app/yealink/app_config.php
@@ -1246,4 +1246,20 @@
 		$apps[$x]['default_settings'][$y]['default_setting_value'] = "0";
 		$apps[$x]['default_settings'][$y]['default_setting_enabled'] = "false";
 		$apps[$x]['default_settings'][$y]['default_setting_description'] = "Configures the interval (in seconds) to automatically lock the IP phone. It ranges from 0 to 3600, the default value is 0.";
+        	$y++;
+        	$apps[$x]['default_settings'][$y]['default_setting_uuid'] = "1549a926-fcb5-4384-a237-83aa77170e5a";
+		$apps[$x]['default_settings'][$y]['default_setting_category'] = "provision";
+		$apps[$x]['default_settings'][$y]['default_setting_subcategory'] = "yealink_summer_time";
+		$apps[$x]['default_settings'][$y]['default_setting_name'] = "numeric";
+		$apps[$x]['default_settings'][$y]['default_setting_value'] = "0";
+		$apps[$x]['default_settings'][$y]['default_setting_enabled'] = "false";
+		$apps[$x]['default_settings'][$y]['default_setting_description'] = "It configures Daylight Saving Time (DST) feature. 0-Disabled, 1-Enabled, 2-Automatic";
+		$y++;
+        	$apps[$x]['default_settings'][$y]['default_setting_uuid'] = "2bcfc683-8731-4eb1-b79e-a4fb94ede2c9";
+		$apps[$x]['default_settings'][$y]['default_setting_category'] = "provision";
+		$apps[$x]['default_settings'][$y]['default_setting_subcategory'] = "yealink_dst_type";
+		$apps[$x]['default_settings'][$y]['default_setting_name'] = "numeric";
+		$apps[$x]['default_settings'][$y]['default_setting_value'] = "0";
+		$apps[$x]['default_settings'][$y]['default_setting_enabled'] = "false";
+		$apps[$x]['default_settings'][$y]['default_setting_description'] = "It configures the Daylight Saving Time (DST) type. (It works only if “local_time.summer_time” is set to 1 (Enabled)). 0-DST by Date, 1-DST by Week";
 ?>