diff --git a/resources/templates/provision/grandstream/gxp2130/{$mac}.xml b/resources/templates/provision/grandstream/gxp2130/{$mac}.xml
index 49aaebb15b..2a0228b5d8 100644
--- a/resources/templates/provision/grandstream/gxp2130/{$mac}.xml
+++ b/resources/templates/provision/grandstream/gxp2130/{$mac}.xml
@@ -177,9 +177,9 @@
 		<!-- SIP Transport -->
 		<!-- UDP, TCP, Tls Or Tcp -->
 		{if $row.sip_transport == ''}<item name="account.{$row.line_number}.sip.transport">TCP</item>{/if}
-		{if $row.sip_transport == 'UDP'}<item name="account.{$row.line_number}.sip.transport">UDP</item>{/if}
-		{if $row.sip_transport == 'TCP'}<item name="account.{$row.line_number}.sip.transport">TCP</item>{/if}
-		{if $row.sip_transport == 'TLS'}<item name="account.{$row.line_number}.sip.transport">Tls</item>{/if}
+		{if $row.sip_transport == 'udp'}<item name="account.{$row.line_number}.sip.transport">UDP</item>{/if}
+		{if $row.sip_transport == 'tcp'}<item name="account.{$row.line_number}.sip.transport">TCP</item>{/if}
+		{if $row.sip_transport == 'tls'}<item name="account.{$row.line_number}.sip.transport">Tls</item>{/if}
 
 		<!-- SIP Listening Mode -->
 		<!-- Transport_Only, Dual, Dual_BLF_Enforced, Dual_Secured -->
diff --git a/resources/templates/provision/grandstream/gxp2135/{$mac}.xml b/resources/templates/provision/grandstream/gxp2135/{$mac}.xml
index 7b28fe04b8..a622cfc585 100644
--- a/resources/templates/provision/grandstream/gxp2135/{$mac}.xml
+++ b/resources/templates/provision/grandstream/gxp2135/{$mac}.xml
@@ -177,9 +177,9 @@
 		<!-- SIP Transport -->
 		<!-- UDP, TCP, Tls Or Tcp -->
 		{if $row.sip_transport == ''}<item name="account.{$row.line_number}.sip.transport">TCP</item>{/if}
-		{if $row.sip_transport == 'UDP'}<item name="account.{$row.line_number}.sip.transport">UDP</item>{/if}
-		{if $row.sip_transport == 'TCP'}<item name="account.{$row.line_number}.sip.transport">TCP</item>{/if}
-		{if $row.sip_transport == 'TLS'}<item name="account.{$row.line_number}.sip.transport">Tls</item>{/if}
+		{if $row.sip_transport == 'udp'}<item name="account.{$row.line_number}.sip.transport">UDP</item>{/if}
+		{if $row.sip_transport == 'tcp'}<item name="account.{$row.line_number}.sip.transport">TCP</item>{/if}
+		{if $row.sip_transport == 'tls'}<item name="account.{$row.line_number}.sip.transport">Tls</item>{/if}
 
 		<!-- SIP Listening Mode -->
 		<!-- Transport_Only, Dual, Dual_BLF_Enforced, Dual_Secured -->
diff --git a/resources/templates/provision/grandstream/gxp2140/{$mac}.xml b/resources/templates/provision/grandstream/gxp2140/{$mac}.xml
index 8d0b1b08b9..bb5a7f2856 100644
--- a/resources/templates/provision/grandstream/gxp2140/{$mac}.xml
+++ b/resources/templates/provision/grandstream/gxp2140/{$mac}.xml
@@ -177,9 +177,9 @@
 		<!-- SIP Transport -->
 		<!-- UDP, TCP, Tls Or Tcp -->
 		{if $row.sip_transport == ''}<item name="account.{$row.line_number}.sip.transport">TCP</item>{/if}
-		{if $row.sip_transport == 'UDP'}<item name="account.{$row.line_number}.sip.transport">UDP</item>{/if}
-		{if $row.sip_transport == 'TCP'}<item name="account.{$row.line_number}.sip.transport">TCP</item>{/if}
-		{if $row.sip_transport == 'TLS'}<item name="account.{$row.line_number}.sip.transport">Tls</item>{/if}
+		{if $row.sip_transport == 'udp'}<item name="account.{$row.line_number}.sip.transport">UDP</item>{/if}
+		{if $row.sip_transport == 'tcp'}<item name="account.{$row.line_number}.sip.transport">TCP</item>{/if}
+		{if $row.sip_transport == 'tls'}<item name="account.{$row.line_number}.sip.transport">Tls</item>{/if}
 
 		<!-- SIP Listening Mode -->
 		<!-- Transport_Only, Dual, Dual_BLF_Enforced, Dual_Secured -->
diff --git a/resources/templates/provision/grandstream/gxp2160/{$mac}.xml b/resources/templates/provision/grandstream/gxp2160/{$mac}.xml
index 8a8ca3bef4..5bfc894586 100644
--- a/resources/templates/provision/grandstream/gxp2160/{$mac}.xml
+++ b/resources/templates/provision/grandstream/gxp2160/{$mac}.xml
@@ -177,9 +177,9 @@
 		<!-- SIP Transport -->
 		<!-- UDP, TCP, Tls Or Tcp -->
 		{if $row.sip_transport == ''}<item name="account.{$row.line_number}.sip.transport">TCP</item>{/if}
-		{if $row.sip_transport == 'UDP'}<item name="account.{$row.line_number}.sip.transport">UDP</item>{/if}
-		{if $row.sip_transport == 'TCP'}<item name="account.{$row.line_number}.sip.transport">TCP</item>{/if}
-		{if $row.sip_transport == 'TLS'}<item name="account.{$row.line_number}.sip.transport">Tls</item>{/if}
+		{if $row.sip_transport == 'udp'}<item name="account.{$row.line_number}.sip.transport">UDP</item>{/if}
+		{if $row.sip_transport == 'tcp'}<item name="account.{$row.line_number}.sip.transport">TCP</item>{/if}
+		{if $row.sip_transport == 'tls'}<item name="account.{$row.line_number}.sip.transport">Tls</item>{/if}
 
 		<!-- SIP Listening Mode -->
 		<!-- Transport_Only, Dual, Dual_BLF_Enforced, Dual_Secured -->
diff --git a/resources/templates/provision/grandstream/gxp2170/{$mac}.xml b/resources/templates/provision/grandstream/gxp2170/{$mac}.xml
index 83c240c729..37c88af6e1 100644
--- a/resources/templates/provision/grandstream/gxp2170/{$mac}.xml
+++ b/resources/templates/provision/grandstream/gxp2170/{$mac}.xml
@@ -177,9 +177,9 @@
 		<!-- SIP Transport -->
 		<!-- UDP, TCP, Tls Or Tcp -->
 		{if $row.sip_transport == ''}<item name="account.{$row.line_number}.sip.transport">TCP</item>{/if}
-		{if $row.sip_transport == 'UDP'}<item name="account.{$row.line_number}.sip.transport">UDP</item>{/if}
-		{if $row.sip_transport == 'TCP'}<item name="account.{$row.line_number}.sip.transport">TCP</item>{/if}
-		{if $row.sip_transport == 'TLS'}<item name="account.{$row.line_number}.sip.transport">Tls</item>{/if}
+		{if $row.sip_transport == 'udp'}<item name="account.{$row.line_number}.sip.transport">UDP</item>{/if}
+		{if $row.sip_transport == 'tcp'}<item name="account.{$row.line_number}.sip.transport">TCP</item>{/if}
+		{if $row.sip_transport == 'tls'}<item name="account.{$row.line_number}.sip.transport">Tls</item>{/if}
 
 		<!-- SIP Listening Mode -->
 		<!-- Transport_Only, Dual, Dual_BLF_Enforced, Dual_Secured -->