diff --git a/resources/templates/provision/yealink/cp860/y000000000037.cfg b/resources/templates/provision/yealink/cp860/y000000000037.cfg
index 4d1bc9aa3..cacd82a80 100644
--- a/resources/templates/provision/yealink/cp860/y000000000037.cfg
+++ b/resources/templates/provision/yealink/cp860/y000000000037.cfg
@@ -461,7 +461,7 @@ transfer.dsskey_deal_type =
 lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
-lang.gui = English
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                                   Time                                            ##
diff --git a/resources/templates/provision/yealink/cp920/y000000000000.cfg b/resources/templates/provision/yealink/cp920/y000000000000.cfg
index c621d883c..275bcc71d 100644
--- a/resources/templates/provision/yealink/cp920/y000000000000.cfg
+++ b/resources/templates/provision/yealink/cp920/y000000000000.cfg
@@ -461,7 +461,7 @@ transfer.dsskey_deal_type =
 lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
-lang.gui = English
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                                   Time                                            ##
diff --git a/resources/templates/provision/yealink/cp960/y000000000000.cfg b/resources/templates/provision/yealink/cp960/y000000000000.cfg
index c330a836d..608b630f4 100644
--- a/resources/templates/provision/yealink/cp960/y000000000000.cfg
+++ b/resources/templates/provision/yealink/cp960/y000000000000.cfg
@@ -461,7 +461,7 @@ transfer.dsskey_deal_type =
 lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
-lang.gui = English
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                                   Time                                            ##
diff --git a/resources/templates/provision/yealink/t19p/y000000000053.cfg b/resources/templates/provision/yealink/t19p/y000000000053.cfg
index c006386ad..826a34cd3 100644
--- a/resources/templates/provision/yealink/t19p/y000000000053.cfg
+++ b/resources/templates/provision/yealink/t19p/y000000000053.cfg
@@ -694,7 +694,7 @@ lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
 #lang.gui = English
-lang.gui =
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                             Time Settings                                         ##
diff --git a/resources/templates/provision/yealink/t20p/y000000000007.cfg b/resources/templates/provision/yealink/t20p/y000000000007.cfg
index 691655c0d..8623957ac 100644
--- a/resources/templates/provision/yealink/t20p/y000000000007.cfg
+++ b/resources/templates/provision/yealink/t20p/y000000000007.cfg
@@ -694,7 +694,7 @@ lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
 #lang.gui = English
-lang.gui =
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                             Time Settings                                         ##
diff --git a/resources/templates/provision/yealink/t21p/y000000000052.cfg b/resources/templates/provision/yealink/t21p/y000000000052.cfg
index 1f0029d08..287e60306 100644
--- a/resources/templates/provision/yealink/t21p/y000000000052.cfg
+++ b/resources/templates/provision/yealink/t21p/y000000000052.cfg
@@ -402,7 +402,7 @@ transfer.dsskey_deal_type =
 lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
-lang.gui = English
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                                   Time Settings                                   ##
diff --git a/resources/templates/provision/yealink/t22p/y000000000005.cfg b/resources/templates/provision/yealink/t22p/y000000000005.cfg
index 61d027685..d6c9bf28f 100644
--- a/resources/templates/provision/yealink/t22p/y000000000005.cfg
+++ b/resources/templates/provision/yealink/t22p/y000000000005.cfg
@@ -694,7 +694,7 @@ lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
 #lang.gui = English
-lang.gui =
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                             Time Settings                                         ##
diff --git a/resources/templates/provision/yealink/t23g/y000000000044.cfg b/resources/templates/provision/yealink/t23g/y000000000044.cfg
index 5f4f5f21f..9e3c946c7 100644
--- a/resources/templates/provision/yealink/t23g/y000000000044.cfg
+++ b/resources/templates/provision/yealink/t23g/y000000000044.cfg
@@ -442,7 +442,7 @@ transfer.dsskey_deal_type =
 lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
-lang.gui = English
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                                   Time Settings                                   ##
diff --git a/resources/templates/provision/yealink/t23p/y000000000044.cfg b/resources/templates/provision/yealink/t23p/y000000000044.cfg
index c4bd12392..fb633ad4c 100644
--- a/resources/templates/provision/yealink/t23p/y000000000044.cfg
+++ b/resources/templates/provision/yealink/t23p/y000000000044.cfg
@@ -443,7 +443,7 @@ transfer.dsskey_deal_type =
 lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
-lang.gui = English
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                                   Time Settings                                   ##
diff --git a/resources/templates/provision/yealink/t26p/y000000000004.cfg b/resources/templates/provision/yealink/t26p/y000000000004.cfg
index 1567273b9..2757e3cb9 100644
--- a/resources/templates/provision/yealink/t26p/y000000000004.cfg
+++ b/resources/templates/provision/yealink/t26p/y000000000004.cfg
@@ -694,7 +694,7 @@ lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
 #lang.gui = English
-lang.gui =
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                             Time Settings                                         ##
diff --git a/resources/templates/provision/yealink/t27g/y000000000069.cfg b/resources/templates/provision/yealink/t27g/y000000000069.cfg
index a9b36b67a..ba9a3ffdc 100644
--- a/resources/templates/provision/yealink/t27g/y000000000069.cfg
+++ b/resources/templates/provision/yealink/t27g/y000000000069.cfg
@@ -442,7 +442,7 @@ transfer.dsskey_deal_type =
 lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
-lang.gui = English
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                                   Time Settings                                   ##
diff --git a/resources/templates/provision/yealink/t27p/y000000000045.cfg b/resources/templates/provision/yealink/t27p/y000000000045.cfg
index cad698a19..093293f1d 100644
--- a/resources/templates/provision/yealink/t27p/y000000000045.cfg
+++ b/resources/templates/provision/yealink/t27p/y000000000045.cfg
@@ -443,7 +443,7 @@ transfer.dsskey_deal_type =
 lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
-lang.gui = English
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                                   Time Settings                                   ##
diff --git a/resources/templates/provision/yealink/t28p/y000000000000.cfg b/resources/templates/provision/yealink/t28p/y000000000000.cfg
index cb37d67e8..3b954e0cb 100644
--- a/resources/templates/provision/yealink/t28p/y000000000000.cfg
+++ b/resources/templates/provision/yealink/t28p/y000000000000.cfg
@@ -694,7 +694,7 @@ lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
 #lang.gui = English
-lang.gui =
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##         	                   Time Settings                                         ##
diff --git a/resources/templates/provision/yealink/t29g/y000000000046.cfg b/resources/templates/provision/yealink/t29g/y000000000046.cfg
index 86b1483d4..88cd4ba8a 100644
--- a/resources/templates/provision/yealink/t29g/y000000000046.cfg
+++ b/resources/templates/provision/yealink/t29g/y000000000046.cfg
@@ -443,7 +443,7 @@ transfer.dsskey_deal_type =
 lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
-lang.gui = English
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                                   Time Settings                                   ##
diff --git a/resources/templates/provision/yealink/t32g/y000000000032.cfg b/resources/templates/provision/yealink/t32g/y000000000032.cfg
index b88be6d5c..dcfd7ca3d 100644
--- a/resources/templates/provision/yealink/t32g/y000000000032.cfg
+++ b/resources/templates/provision/yealink/t32g/y000000000032.cfg
@@ -694,7 +694,7 @@ lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
 #lang.gui = English
-lang.gui =
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                             Time Settings                                         ##
diff --git a/resources/templates/provision/yealink/t38g/y000000000038.cfg b/resources/templates/provision/yealink/t38g/y000000000038.cfg
index 4c582239b..51460bdc3 100644
--- a/resources/templates/provision/yealink/t38g/y000000000038.cfg
+++ b/resources/templates/provision/yealink/t38g/y000000000038.cfg
@@ -694,7 +694,7 @@ lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
 #lang.gui = English
-lang.gui =
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                             Time Settings                                         ##
diff --git a/resources/templates/provision/yealink/t40g/y000000000076.cfg b/resources/templates/provision/yealink/t40g/y000000000076.cfg
index 84acc6922..6549e7edf 100644
--- a/resources/templates/provision/yealink/t40g/y000000000076.cfg
+++ b/resources/templates/provision/yealink/t40g/y000000000076.cfg
@@ -443,7 +443,7 @@ transfer.dsskey_deal_type =
 lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
-lang.gui = English
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                                   Time Settings                                   ##
diff --git a/resources/templates/provision/yealink/t40p/y000000000054.cfg b/resources/templates/provision/yealink/t40p/y000000000054.cfg
index 1747d46f9..f9d445ace 100644
--- a/resources/templates/provision/yealink/t40p/y000000000054.cfg
+++ b/resources/templates/provision/yealink/t40p/y000000000054.cfg
@@ -443,7 +443,7 @@ transfer.dsskey_deal_type =
 lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
-lang.gui = English
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                                   Time Settings                                   ##
diff --git a/resources/templates/provision/yealink/t41p/y000000000036.cfg b/resources/templates/provision/yealink/t41p/y000000000036.cfg
index 5ae555c20..3318c6744 100644
--- a/resources/templates/provision/yealink/t41p/y000000000036.cfg
+++ b/resources/templates/provision/yealink/t41p/y000000000036.cfg
@@ -443,7 +443,7 @@ transfer.dsskey_deal_type =
 lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
-lang.gui = English
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                                   Time Settings                                   ##
diff --git a/resources/templates/provision/yealink/t41s/y000000000068.cfg b/resources/templates/provision/yealink/t41s/y000000000068.cfg
index 7c24cada7..0162d74d6 100644
--- a/resources/templates/provision/yealink/t41s/y000000000068.cfg
+++ b/resources/templates/provision/yealink/t41s/y000000000068.cfg
@@ -1380,9 +1380,7 @@ wui_lang.delete=
 gui_input_method.delete=
 gui_lang.url=
 gui_lang.delete=
-
-{if isset({$yealink_language_gui})}static.lang.gui = {$yealink_language_gui}{else}static.lang.gui = English{/if}
-
+static.lang.gui = {$yealink_language_gui}
 static.lang.wui=
 
 
diff --git a/resources/templates/provision/yealink/t42g/y000000000029.cfg b/resources/templates/provision/yealink/t42g/y000000000029.cfg
index c619e569e..9c6afb20e 100644
--- a/resources/templates/provision/yealink/t42g/y000000000029.cfg
+++ b/resources/templates/provision/yealink/t42g/y000000000029.cfg
@@ -443,7 +443,7 @@ transfer.dsskey_deal_type =
 lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
-lang.gui = English
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                                   Time Settings                                   ##
diff --git a/resources/templates/provision/yealink/t42s/y000000000067.cfg b/resources/templates/provision/yealink/t42s/y000000000067.cfg
index 78f607aca..5e34fcbd9 100644
--- a/resources/templates/provision/yealink/t42s/y000000000067.cfg
+++ b/resources/templates/provision/yealink/t42s/y000000000067.cfg
@@ -1380,9 +1380,7 @@ wui_lang.delete=
 gui_input_method.delete=
 gui_lang.url=
 gui_lang.delete=
-
-{if isset({$yealink_language_gui})}static.lang.gui = {$yealink_language_gui}{else}static.lang.gui = English{/if}
-
+static.lang.gui = {$yealink_language_gui}
 static.lang.wui=
 
 
diff --git a/resources/templates/provision/yealink/t46g/y000000000028.cfg b/resources/templates/provision/yealink/t46g/y000000000028.cfg
index a0cc0df77..2d7749f7e 100755
--- a/resources/templates/provision/yealink/t46g/y000000000028.cfg
+++ b/resources/templates/provision/yealink/t46g/y000000000028.cfg
@@ -443,7 +443,7 @@ transfer.dsskey_deal_type =
 lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
-lang.gui = English
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                                   Time Settings                                   ##
diff --git a/resources/templates/provision/yealink/t46s/y000000000066.cfg b/resources/templates/provision/yealink/t46s/y000000000066.cfg
index ed79ea0fb..05614ebaf 100644
--- a/resources/templates/provision/yealink/t46s/y000000000066.cfg
+++ b/resources/templates/provision/yealink/t46s/y000000000066.cfg
@@ -1380,9 +1380,7 @@ wui_lang.delete=
 gui_input_method.delete=
 gui_lang.url=
 gui_lang.delete=
-
-{if isset({$yealink_language_gui})}static.lang.gui = {$yealink_language_gui}{else}static.lang.gui = English{/if}
-
+static.lang.gui = {$yealink_language_gui}
 static.lang.wui=
 
 
diff --git a/resources/templates/provision/yealink/t48g/y000000000035.cfg b/resources/templates/provision/yealink/t48g/y000000000035.cfg
index a73e773d4..a95932dc3 100644
--- a/resources/templates/provision/yealink/t48g/y000000000035.cfg
+++ b/resources/templates/provision/yealink/t48g/y000000000035.cfg
@@ -443,7 +443,7 @@ transfer.dsskey_deal_type =
 lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
-lang.gui = English
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                                   Time Settings                                   ##
diff --git a/resources/templates/provision/yealink/t48s/y000000000065.cfg b/resources/templates/provision/yealink/t48s/y000000000065.cfg
index 65ff30419..9a3f53cb8 100644
--- a/resources/templates/provision/yealink/t48s/y000000000065.cfg
+++ b/resources/templates/provision/yealink/t48s/y000000000065.cfg
@@ -1380,9 +1380,7 @@ wui_lang.delete=
 gui_input_method.delete=
 gui_lang.url=
 gui_lang.delete=
-
-{if isset({$yealink_language_gui})}static.lang.gui = {$yealink_language_gui}{else}static.lang.gui = English{/if}
-
+static.lang.gui = {$yealink_language_gui}
 static.lang.wui=
 
 
diff --git a/resources/templates/provision/yealink/t49g/y000000000051.cfg b/resources/templates/provision/yealink/t49g/y000000000051.cfg
index d04664b3f..ec508d447 100644
--- a/resources/templates/provision/yealink/t49g/y000000000051.cfg
+++ b/resources/templates/provision/yealink/t49g/y000000000051.cfg
@@ -402,7 +402,7 @@ transfer.dsskey_deal_type =
 lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, Chinese_T, German, French, Turkish, Italian, Polish, Spanish and Portuguese.
-lang.gui = English
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##                                   Time Settings                                   ##
diff --git a/resources/templates/provision/yealink/t56a/y000000000056.cfg b/resources/templates/provision/yealink/t56a/y000000000056.cfg
index e26b42075..c4f672b82 100644
--- a/resources/templates/provision/yealink/t56a/y000000000056.cfg
+++ b/resources/templates/provision/yealink/t56a/y000000000056.cfg
@@ -465,7 +465,7 @@ static.lang.wui =
 
 ##It configures the language of the phone user interface.
 ##The default value is English.
-static.lang.gui = 
+static.lang.gui = {$yealink_language_gui}
 
 gui_lang.url = 
 gui_lang.delete = 
diff --git a/resources/templates/provision/yealink/t58v/y000000000058.cfg b/resources/templates/provision/yealink/t58v/y000000000058.cfg
index e26b42075..c4f672b82 100644
--- a/resources/templates/provision/yealink/t58v/y000000000058.cfg
+++ b/resources/templates/provision/yealink/t58v/y000000000058.cfg
@@ -465,7 +465,7 @@ static.lang.wui =
 
 ##It configures the language of the phone user interface.
 ##The default value is English.
-static.lang.gui = 
+static.lang.gui = {$yealink_language_gui}
 
 gui_lang.url = 
 gui_lang.delete = 
diff --git a/resources/templates/provision/yealink/vp530/y000000000023.cfg b/resources/templates/provision/yealink/vp530/y000000000023.cfg
index 143a0373b..49a24c88e 100644
--- a/resources/templates/provision/yealink/vp530/y000000000023.cfg
+++ b/resources/templates/provision/yealink/vp530/y000000000023.cfg
@@ -595,7 +595,7 @@ action_url.call_remote_canceled =
 lang.wui =
 
 #Specify the LCD language, the valid values are: English (default), Chinese_S, German, French, Turkish, Italiano, Polish and Portungues;
-lang.gui = English
+lang.gui = {$yealink_language_gui}
 
 #######################################################################################
 ##         	                   Time Settings                                         ##