diff --git a/resources/templates/provision/yealink/t54s/{$mac}.cfg b/resources/templates/provision/yealink/t54s/{$mac}.cfg
index ab563670fe..08a474902f 100644
--- a/resources/templates/provision/yealink/t54s/{$mac}.cfg
+++ b/resources/templates/provision/yealink/t54s/{$mac}.cfg
@@ -142,20 +142,20 @@ account.1.auto_answer=
 ################################################################
 #                      Account Advanced                       ##
 ################################################################
-account.1.nat.udp_update_enable=
-account.1.nat.udp_update_time=
-account.1.nat.rport=
+account.1.nat.udp_update_enable= 3
+account.1.nat.udp_update_time= 30
+account.1.nat.rport= {$yealink_rport}
 
 account.1.dtmf.type=
 account.1.dtmf.info_type=
 account.1.dtmf.dtmf_payload=
-account.1.100rel_enable=
+account.1.100rel_enable= {$yealink_retransmission}
 
 account.1.subscribe_register=
-account.1.cid_source=
+account.1.cid_source= {$yealink_cid_source}
 account.1.enable_user_equal_phone=
-account.1.srtp_encryption=
-account.1.ptime=
+account.1.srtp_encryption= {$yealink_srtp_encryption}
+account.1.ptime= 20
 account.1.register_line=
 account.1.register_mac=
 account.1.reg_fail_retry_interval=
@@ -163,7 +163,7 @@ account.1.unregister_on_reboot=
 
 account.1.session_timer.refresher=
 account.1.session_timer.expires=
-account.1.session_timer.enable=
+account.1.session_timer.enable= {$yealink_session_timer}
 
 account.1.conf_type=
 account.1.sip_server_type=
@@ -180,10 +180,10 @@ account.1.outbound_proxy.1.only_signal_with_registered=
 account.1.outbound_proxy.1.failback_subscribe.enable=
 account.1.outbound_proxy.1.invite_retry_counts=
 
-account.1.sip_server.1.register_on_enable=
-account.1.sip_server.1.failback_timeout=
-account.1.sip_server.1.failback_mode=
-account.1.sip_server.1.failback_subscribe.enable=
+account.1.sip_server.1.register_on_enable= 0
+account.1.sip_server.1.failback_timeout= 3600
+account.1.sip_server.1.failback_mode= 0
+account.1.sip_server.1.failback_subscribe.enable= 
 account.1.sip_server.1.only_signal_with_registered=
 account.1.sip_server.1.invite_retry_counts=
 
@@ -283,7 +283,7 @@ account.1.dnd.on_code=
 #######################################################################################  
 ##                               Voice Mail                                          ##  
 #######################################################################################
-voice_mail.number.1=
+voice_mail.number.1= {$voicemail_number}
 account.1.subscribe_mwi=
 account.1.subscribe_mwi_to_vm=
 account.1.subscribe_mwi_expires=
@@ -338,7 +338,7 @@ account.1.blf.subscribe_event=
 #######################################################################################
 ##                                   SCA                                             ##       
 #######################################################################################
-account.1.shared_line=
+account.1.shared_line= {$shared_line_1}
 account.1.line_seize.expires=
 account.1.shared_line_one_touch_bargein.enable=
 account.1.shared_line_one_touch_retrieve.enable=