diff --git a/resources/templates/provision/yealink/t4x/{$mac}.cfg b/resources/templates/provision/yealink/t4x/{$mac}.cfg
index bd77fa8714..97a46c35c9 100644
--- a/resources/templates/provision/yealink/t4x/{$mac}.cfg
+++ b/resources/templates/provision/yealink/t4x/{$mac}.cfg
@@ -5,7 +5,7 @@
 
 {foreach $lines as $row}
 #######################################################################################
-##                           Account {$row.line_number} Basic Settings                                ##
+##                           Account {$row.line_number} Basic Settings               ##
 #######################################################################################
 ## ranges from 1 to 16
 
@@ -26,9 +26,13 @@ account.{$row.line_number}.user_name = {$account.{$row.line_number}.user_id}
 {/if}
 
 {if isset($row.server.1.address)}
-account.{$row.line_number}.sip_server.1.address = {$row.server.1.address} 
+account.{$row.line_number}.sip_server.1.address = {$row.server_address}
 {else}
-account.{$row.line_number}.sip_server_host = {$account.{$row.line_number}.server_address}
+#firmware .160 and newer
+account.{$row.line_number}.sip_server.1.address = {$row.server_address}
+
+#firmware .125 and older
+account.{$row.line_number}.sip_server_host = {$row.server_address} 
 {/if}
 
 account.{$row.line_number}.sip_server_port = {$account.{$row.line_number}.sip_port}
@@ -587,3 +591,5 @@ expansion_module.6.key.{$row.device_key_id}.extension = {$row.device_key_extensi
 expansion_module.6.key.{$row.device_key_id}.label = {$row.device_key_label}
 expansion_module.6.key.{$row.device_key_id}.xml_phonebook =
 {/foreach}
+
+