diff --git a/resources/templates/provision/grandstream/ht802/{$mac}.xml b/resources/templates/provision/grandstream/ht802/{$mac}.xml
index 7f7244470..19f03c6f5 100644
--- a/resources/templates/provision/grandstream/ht802/{$mac}.xml
+++ b/resources/templates/provision/grandstream/ht802/{$mac}.xml
@@ -1186,7 +1186,11 @@
     <!-- # FAX Mode. 0 - T.38 (Auto Detect), 1 - Pass Through -->
     <!-- # Number: 0, 1 -->
     <!-- # Mandatory -->
+{if isset($grandstream_fax_mode)}
+    <P228>1</P228>
+{else}
     <P228>0</P228>
+{/if}
 
     <!-- # Re-INVITE After Fax Tone Detected. 0 - Disabled, 1 - Enabled. -->
     <!-- # Number: 0, 1 -->