diff --git a/resources/templates/provision/grandstream/grp26xx/{$mac}.xml b/resources/templates/provision/grandstream/grp26xx/{$mac}.xml
index 2e7fbe5aad..3bea13d1bb 100644
--- a/resources/templates/provision/grandstream/grp26xx/{$mac}.xml
+++ b/resources/templates/provision/grandstream/grp26xx/{$mac}.xml
@@ -5676,18 +5676,18 @@
     <!-- # When set to Yes(1), it will override the configured provision path and method -->
     <!-- # Number: 0, 1, 2 -->
     <!-- # Mandatory -->
-    <P145>1</P145>
+    {if isset($grandstream_dhcp_option_override)}<P145>{$grandstream_dhcp_option_override}</P145>{else}<P145>1</P145>{/if}
 
     <!-- # Additional Override DHCP Option. 0 - None,  1 - Option 150,  2 - Option 160. Default is 0 -->
     <!-- # Number: 0, 1, 2 -->
     <!-- # Mandatory -->
-    <P8337>0</P8337>
+    {if isset($grandstream_dhcp_option_additional_override)}<P8337>{$grandstream_dhcp_option_additional_override}</P8337>{else}<P8337>0</P8337>{/if}
 
     <!-- # Allow DHCP Option 120 to Override SIP Server -->
     <!-- # 0 - No, 1 - Yes. Default is 0 -->
     <!-- # Number: 0, 1 -->
     <!-- # Mandatory -->
-    <P1411>0</P1411>
+    {if isset($grandstream_dhcp_option_override_sip_server)}<P1411>{$grandstream_dhcp_option_override_sip_server}</P1411>{else}<P1411>0</P1411>{/if}
 
     <!-- # 3CX Auto Provision. 0 - No, 1 - Yes. Default is Yes -->
     <!-- # Number: 0, 1 -->