diff --git a/resources/templates/provision/polycom/4.x/{$mac}.cfg b/resources/templates/provision/polycom/4.x/{$mac}.cfg
index 74dc404be3..9a2e31687c 100644
--- a/resources/templates/provision/polycom/4.x/{$mac}.cfg
+++ b/resources/templates/provision/polycom/4.x/{$mac}.cfg
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 <PHONE>
 	<REGISTRATION
-		
+
 		reg.{$row.line_number}.serverFeatureControl.cf="{$polycom_feature_key_sync}"
         	reg.{$row.line_number}.serverFeatureControl.dnd="{$polycom_feature_key_sync}"
 		
@@ -125,6 +125,9 @@
 		diags.pcap.remote.enabled="0"
 	/>
 	<GENERAL
+		{if isset($polycom_nat_ip)}
+		nat.ip="{$polycom_nat_ip}"
+		{/if}
 		nat.keepalive.interval="30"
 		voIpProt.SIP.specialEvent.checkSync.alwaysReboot="1"
 		voIpProt.SIP.requestValidation.1.request="INVITE"