diff --git a/resources/templates/provision/grandstream/gxp21xx/{$mac}.xml b/resources/templates/provision/grandstream/gxp21xx/{$mac}.xml
index 6b332cfd4e..eb8a5aca76 100644
--- a/resources/templates/provision/grandstream/gxp21xx/{$mac}.xml
+++ b/resources/templates/provision/grandstream/gxp21xx/{$mac}.xml
@@ -297,7 +297,7 @@
     <!-- Dial Plan. Default value is { x+ | *x+ | *xx*x+ } -->
     <!-- String -->
     <!-- Mandatory -->
-    <P290>{ x+ | *x+ | *xx | *xxx | *xxxx | *xxxxx | *xxxxxx | **xx | **xxx | **xxxx | **xxxxx | **xxxxxx | **xxxxxxx | **xxxxxxxx | *xx*x+ }</P290>
+    <P290>{$grandstream_dial_plan}</P290>
     <!-- Delayed Call Forward Wait Time (in seconds). Default is 20 -->
     <!-- Number: 1 - 120 -->
     <!-- Mandatory -->
@@ -3617,4 +3617,4 @@ Outgoing calls. 0 - No, 1 - Yes. Default is 0 -->
 {/foreach}
 
   </config>
-</gs_provision>
\ No newline at end of file
+</gs_provision>