diff --git a/resources/templates/provision/grandstream/grp2612/{$mac}.xml b/resources/templates/provision/grandstream/grp2612/{$mac}.xml
index 6c3c92339f..9303651fd5 100644
--- a/resources/templates/provision/grandstream/grp2612/{$mac}.xml
+++ b/resources/templates/provision/grandstream/grp2612/{$mac}.xml
@@ -173,7 +173,7 @@
 		<!-- Register Expiration (m) -->
 		<!-- Number: 0 - 64800 -->
 		<!-- Pvalue P32 -->
-		<item name="account.{$row.line_number}.sip.registerExpiration">15</item>
+		<item name="account.{$row.line_number}.sip.registerExpiration">{$row.register_expires}</item>
 
 		<!-- Subscribe Expiration (m) -->
 		<!-- Number: 0 - 64800 -->
diff --git a/resources/templates/provision/grandstream/grp2612w/{$mac}.xml b/resources/templates/provision/grandstream/grp2612w/{$mac}.xml
index 6c3c92339f..9303651fd5 100644
--- a/resources/templates/provision/grandstream/grp2612w/{$mac}.xml
+++ b/resources/templates/provision/grandstream/grp2612w/{$mac}.xml
@@ -173,7 +173,7 @@
 		<!-- Register Expiration (m) -->
 		<!-- Number: 0 - 64800 -->
 		<!-- Pvalue P32 -->
-		<item name="account.{$row.line_number}.sip.registerExpiration">15</item>
+		<item name="account.{$row.line_number}.sip.registerExpiration">{$row.register_expires}</item>
 
 		<!-- Subscribe Expiration (m) -->
 		<!-- Number: 0 - 64800 -->
diff --git a/resources/templates/provision/grandstream/grp2613/{$mac}.xml b/resources/templates/provision/grandstream/grp2613/{$mac}.xml
index 6c3c92339f..9303651fd5 100644
--- a/resources/templates/provision/grandstream/grp2613/{$mac}.xml
+++ b/resources/templates/provision/grandstream/grp2613/{$mac}.xml
@@ -173,7 +173,7 @@
 		<!-- Register Expiration (m) -->
 		<!-- Number: 0 - 64800 -->
 		<!-- Pvalue P32 -->
-		<item name="account.{$row.line_number}.sip.registerExpiration">15</item>
+		<item name="account.{$row.line_number}.sip.registerExpiration">{$row.register_expires}</item>
 
 		<!-- Subscribe Expiration (m) -->
 		<!-- Number: 0 - 64800 -->
diff --git a/resources/templates/provision/grandstream/grp2614/{$mac}.xml b/resources/templates/provision/grandstream/grp2614/{$mac}.xml
index 0ea886fbf1..86f45e6fb1 100644
--- a/resources/templates/provision/grandstream/grp2614/{$mac}.xml
+++ b/resources/templates/provision/grandstream/grp2614/{$mac}.xml
@@ -173,7 +173,7 @@
 		<!-- Register Expiration (m) -->
 		<!-- Number: 0 - 64800 -->
 		<!-- Pvalue P32 -->
-		<item name="account.{$row.line_number}.sip.registerExpiration">15</item>
+		<item name="account.{$row.line_number}.sip.registerExpiration">{$row.register_expires}</item>
 
 		<!-- Subscribe Expiration (m) -->
 		<!-- Number: 0 - 64800 -->
diff --git a/resources/templates/provision/grandstream/grp2615/{$mac}.xml b/resources/templates/provision/grandstream/grp2615/{$mac}.xml
index 6c3c92339f..9a12a886ce 100644
--- a/resources/templates/provision/grandstream/grp2615/{$mac}.xml
+++ b/resources/templates/provision/grandstream/grp2615/{$mac}.xml
@@ -173,8 +173,8 @@
 		<!-- Register Expiration (m) -->
 		<!-- Number: 0 - 64800 -->
 		<!-- Pvalue P32 -->
-		<item name="account.{$row.line_number}.sip.registerExpiration">15</item>
-
+		<item name="account.{$row.line_number}.sip.registerExpiration">{$row.register_expires}</item>
+	
 		<!-- Subscribe Expiration (m) -->
 		<!-- Number: 0 - 64800 -->
 		<!-- Pvalue P26051 -->
diff --git a/resources/templates/provision/grandstream/grp2616/{$mac}.xml b/resources/templates/provision/grandstream/grp2616/{$mac}.xml
index 6c3c92339f..9303651fd5 100644
--- a/resources/templates/provision/grandstream/grp2616/{$mac}.xml
+++ b/resources/templates/provision/grandstream/grp2616/{$mac}.xml
@@ -173,7 +173,7 @@
 		<!-- Register Expiration (m) -->
 		<!-- Number: 0 - 64800 -->
 		<!-- Pvalue P32 -->
-		<item name="account.{$row.line_number}.sip.registerExpiration">15</item>
+		<item name="account.{$row.line_number}.sip.registerExpiration">{$row.register_expires}</item>
 
 		<!-- Subscribe Expiration (m) -->
 		<!-- Number: 0 - 64800 -->