diff --git a/resources/templates/provision/yealink/t48s/y000000000065.cfg b/resources/templates/provision/yealink/t48s/y000000000065.cfg
index f7d5adb4b0..27e4e00bf5 100644
--- a/resources/templates/provision/yealink/t48s/y000000000065.cfg
+++ b/resources/templates/provision/yealink/t48s/y000000000065.cfg
@@ -258,8 +258,8 @@ static.managementserver.enable =
 static.managementserver.username =
 static.managementserver.password =
 static.managementserver.url =
-static.managementserver.periodic_inform_enable =
-static.managementserver.periodic_inform_interval =
+static.managementserver.periodic_inform_enable = 0
+static.managementserver.periodic_inform_interval = 60
 static.managementserver.connection_request_password =
 static.managementserver.connection_request_username =
 
@@ -449,8 +449,8 @@ features.password_dial.length=
 features.password_dial.prefix=
 features.password_dial.enable=
 features.group_listen_in_talking_enable=
-phone_setting.call_info_display_method=
-phone_setting.called_party_info_display.enable =
+phone_setting.call_info_display_method = 0
+phone_setting.called_party_info_display.enable = 1
 features.headset_training=
 features.headset_prior=
 features.dtmf.replace_tran =
@@ -594,7 +594,7 @@ sip.listen_mode=
 sip.tls_listen_port=
 sip.tcp_port_random_mode=
 sip.escape_characters.enable=
-sip.notify_reboot_enable=
+sip.notify_reboot_enable = 0
 sip.send_response_by_request=
 sip.disp_incall_to_info=
 features.call_invite_format=
@@ -687,7 +687,7 @@ local_contact.data.url=
 local_contact.data.delete=
 
 ##Only T54S/T52S/T48G/T48S/T46G/T46S/T29G Models support the parameter
-phone_setting.contact_photo_display.enable=
+phone_setting.contact_photo_display.enable = 0
 
 phone_setting.incoming_call.horizontal_roll_interval=
 
@@ -1006,11 +1006,11 @@ features.dnd.allow=
 features.dnd_mode=
 features.dnd.enable=
 
-features.dnd.off_code=
-features.dnd.on_code=
+features.dnd.off_code = *79
+features.dnd.on_code = *78
 
 features.dnd.emergency_authorized_number=
-features.dnd.emergency_enable=
+features.dnd.emergency_enable = 1
 features.dnd.large_icon.enable=
 
 
@@ -1205,7 +1205,7 @@ action_url.unregistered =
 phone_setting.hold_and_held_power_led_flash_enable=
 phone_setting.mute_power_led_flash_enable=
 phone_setting.talk_and_dial_power_led_enable=
-phone_setting.mail_power_led_flash_enable=
+phone_setting.mail_power_led_flash_enable = 1
 phone_setting.ring_power_led_flash_enable=
 phone_setting.common_power_led_enable=
 phone_setting.missed_call_power_led_flash.enable = {$yealink_missed_call_power_led_flash_enable}
@@ -1281,9 +1281,9 @@ phone_setting.lcd_logo.mode=
 
 phone_setting.contrast=
 phone_setting.backlight_time = {$yealink_backlight_time}
-phone_setting.inactive_backlight_level=
+phone_setting.inactive_backlight_level = 1
 phone_setting.active_backlight_level=
-phone_setting.predial_autodial=
+phone_setting.predial_autodial = 1
 
 ringtone.url=
 ringtone.delete=
@@ -1345,8 +1345,8 @@ dialplan.dialnow.rule.1=
 dialplan.block_out.line_id.1=
 dialplan.block_out.number.1=
 dialplan.area_code.line_id =
-dialplan.area_code.max_len =
-dialplan.area_code.min_len=
+dialplan.area_code.max_len = 15
+dialplan.area_code.min_len = 1
 dialplan.area_code.code=
 
 #######################################################################################
@@ -1371,7 +1371,9 @@ wui_lang.delete=
 gui_input_method.delete=
 gui_lang.url=
 gui_lang.delete=
-static.lang.gui=
+
+{if isset({$yealink_language_gui})}static.lang.gui = {$yealink_language_gui}{else}static.lang.gui = English{/if}
+
 static.lang.wui=
 
 
@@ -1438,8 +1440,8 @@ bw.enable =
 #######################################################################################
 ##                                  BLF/BLF List                                     ##       
 #######################################################################################
-phone_setting.auto_blf_list_enable=
-phone_setting.blf_list_sequence_type=
+phone_setting.auto_blf_list_enable = 1
+phone_setting.blf_list_sequence_type = 1
 
 blf.enhanced.parked.enable=
 blf.enhanced.parked.led =
@@ -1469,14 +1471,14 @@ blf.enhanced.callin.talking.action =
 blf.enhanced.callin.callin.action=
 blf.enhanced.callin.idle.action=
 
-blf.enhanced.idle.enable=
+blf.enhanced.idle.enable = 0
 blf.enhanced.idle.led=
 blf.enhanced.idle.parked.action=
 blf.enhanced.idle.talking.action=
 blf.enhanced.idle.callin.action=
 blf.enhanced.idle.idle.action=
 
-features.blf_list_version=
+features.blf_list_version = 0
 sip.sub_refresh_random=
 sip.terminate_notify_sub_delay_time=