diff --git a/resources/templates/provision/yealink/t19p/y000000000053.cfg b/resources/templates/provision/yealink/t19p/y000000000053.cfg
index 4fc31c14c..43be042e2 100644
--- a/resources/templates/provision/yealink/t19p/y000000000053.cfg
+++ b/resources/templates/provision/yealink/t19p/y000000000053.cfg
@@ -306,7 +306,7 @@ transfer.tran_others_after_conf_enable =
 #######################################################################################
 
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t20p/y000000000007.cfg b/resources/templates/provision/yealink/t20p/y000000000007.cfg
index 34c83e883..2dabf0ebc 100644
--- a/resources/templates/provision/yealink/t20p/y000000000007.cfg
+++ b/resources/templates/provision/yealink/t20p/y000000000007.cfg
@@ -306,7 +306,7 @@ transfer.tran_others_after_conf_enable =
 #######################################################################################
 
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t21p/y000000000052.cfg b/resources/templates/provision/yealink/t21p/y000000000052.cfg
index fc848ec9d..0a6bbe892 100644
--- a/resources/templates/provision/yealink/t21p/y000000000052.cfg
+++ b/resources/templates/provision/yealink/t21p/y000000000052.cfg
@@ -314,7 +314,7 @@ sip.call_fail_use_reason.enable = {$yealink_sip_call_fail_use_reason_enable}
 ##                                   Echo Cancellation                               ##
 #######################################################################################
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t22p/y000000000005.cfg b/resources/templates/provision/yealink/t22p/y000000000005.cfg
index 66a640b44..2feb6bdd8 100644
--- a/resources/templates/provision/yealink/t22p/y000000000005.cfg
+++ b/resources/templates/provision/yealink/t22p/y000000000005.cfg
@@ -306,7 +306,7 @@ transfer.tran_others_after_conf_enable =
 #######################################################################################
 
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t23g/y000000000044.cfg b/resources/templates/provision/yealink/t23g/y000000000044.cfg
index fe614347c..c3d5ad523 100644
--- a/resources/templates/provision/yealink/t23g/y000000000044.cfg
+++ b/resources/templates/provision/yealink/t23g/y000000000044.cfg
@@ -354,7 +354,7 @@ sip.nat_turn.port =
 ##                                   Echo Cancellation                               ##
 #######################################################################################
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t23p/y000000000044.cfg b/resources/templates/provision/yealink/t23p/y000000000044.cfg
index 59432798e..f313a8093 100644
--- a/resources/templates/provision/yealink/t23p/y000000000044.cfg
+++ b/resources/templates/provision/yealink/t23p/y000000000044.cfg
@@ -354,7 +354,7 @@ sip.nat_turn.port =
 ##                                   Echo Cancellation                               ##
 #######################################################################################
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t26p/y000000000004.cfg b/resources/templates/provision/yealink/t26p/y000000000004.cfg
index 11d4b9d68..62e58ee48 100644
--- a/resources/templates/provision/yealink/t26p/y000000000004.cfg
+++ b/resources/templates/provision/yealink/t26p/y000000000004.cfg
@@ -306,7 +306,7 @@ transfer.tran_others_after_conf_enable =
 #######################################################################################
 
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t27g/y000000000069.cfg b/resources/templates/provision/yealink/t27g/y000000000069.cfg
index 750441366..1c21f3f56 100644
--- a/resources/templates/provision/yealink/t27g/y000000000069.cfg
+++ b/resources/templates/provision/yealink/t27g/y000000000069.cfg
@@ -381,7 +381,7 @@ sip.nat_turn.port =
 ##                                   Echo Cancellation                               ##
 #######################################################################################
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t27p/y000000000045.cfg b/resources/templates/provision/yealink/t27p/y000000000045.cfg
index 3fffdf90b..d3d064212 100644
--- a/resources/templates/provision/yealink/t27p/y000000000045.cfg
+++ b/resources/templates/provision/yealink/t27p/y000000000045.cfg
@@ -354,7 +354,7 @@ sip.nat_turn.port =
 ##                                   Echo Cancellation                               ##
 #######################################################################################
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t28p/y000000000000.cfg b/resources/templates/provision/yealink/t28p/y000000000000.cfg
index dbce3f899..888793c87 100644
--- a/resources/templates/provision/yealink/t28p/y000000000000.cfg
+++ b/resources/templates/provision/yealink/t28p/y000000000000.cfg
@@ -306,7 +306,7 @@ transfer.tran_others_after_conf_enable =
 #######################################################################################
 
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t29g/y000000000046.cfg b/resources/templates/provision/yealink/t29g/y000000000046.cfg
index 087005305..02913d690 100644
--- a/resources/templates/provision/yealink/t29g/y000000000046.cfg
+++ b/resources/templates/provision/yealink/t29g/y000000000046.cfg
@@ -383,7 +383,7 @@ sip.nat_turn.port =
 ##                                   Echo Cancellation                               ##
 #######################################################################################
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t31g/y000000000123.cfg b/resources/templates/provision/yealink/t31g/y000000000123.cfg
index fd0adab2e..e76aa8a49 100644
--- a/resources/templates/provision/yealink/t31g/y000000000123.cfg
+++ b/resources/templates/provision/yealink/t31g/y000000000123.cfg
@@ -306,7 +306,7 @@ transfer.tran_others_after_conf_enable =
 #######################################################################################
 
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t32g/y000000000032.cfg b/resources/templates/provision/yealink/t32g/y000000000032.cfg
index 4ae531554..5fcc1e14e 100644
--- a/resources/templates/provision/yealink/t32g/y000000000032.cfg
+++ b/resources/templates/provision/yealink/t32g/y000000000032.cfg
@@ -306,7 +306,7 @@ transfer.tran_others_after_conf_enable =
 #######################################################################################
 
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t33g/y000000000124.cfg b/resources/templates/provision/yealink/t33g/y000000000124.cfg
index cbe3c4461..2c178cfdc 100644
--- a/resources/templates/provision/yealink/t33g/y000000000124.cfg
+++ b/resources/templates/provision/yealink/t33g/y000000000124.cfg
@@ -624,7 +624,7 @@ voice.jib.wifi.adaptive=
 #######################################################################################
 voice.echo_cancellation =
 voice.cng =
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 ##V84 Add
 voice.ans_nb.enable=
diff --git a/resources/templates/provision/yealink/t34w/y000000000171.cfg b/resources/templates/provision/yealink/t34w/y000000000171.cfg
index 03fb1b915..cd6e010e8 100644
--- a/resources/templates/provision/yealink/t34w/y000000000171.cfg
+++ b/resources/templates/provision/yealink/t34w/y000000000171.cfg
@@ -621,7 +621,7 @@ voice.jib.wifi.adaptive =
 #######################################################################################
 voice.echo_cancellation =
 voice.cng =
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 ##V84 Add
 voice.ans_nb.enable =
diff --git a/resources/templates/provision/yealink/t38g/y000000000038.cfg b/resources/templates/provision/yealink/t38g/y000000000038.cfg
index 172f2d30d..1ec3530e9 100644
--- a/resources/templates/provision/yealink/t38g/y000000000038.cfg
+++ b/resources/templates/provision/yealink/t38g/y000000000038.cfg
@@ -306,7 +306,7 @@ transfer.tran_others_after_conf_enable =
 #######################################################################################
 
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t40g/y000000000076.cfg b/resources/templates/provision/yealink/t40g/y000000000076.cfg
index 36778e652..2bc91312e 100644
--- a/resources/templates/provision/yealink/t40g/y000000000076.cfg
+++ b/resources/templates/provision/yealink/t40g/y000000000076.cfg
@@ -355,7 +355,7 @@ sip.nat_turn.port =
 ##                                   Echo Cancellation                               ##
 #######################################################################################
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t40p/y000000000054.cfg b/resources/templates/provision/yealink/t40p/y000000000054.cfg
index 65d2f560c..1ce14c8bf 100644
--- a/resources/templates/provision/yealink/t40p/y000000000054.cfg
+++ b/resources/templates/provision/yealink/t40p/y000000000054.cfg
@@ -355,7 +355,7 @@ sip.nat_turn.port =
 ##                                   Echo Cancellation                               ##
 #######################################################################################
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t41p/y000000000036.cfg b/resources/templates/provision/yealink/t41p/y000000000036.cfg
index a9b5a70a8..f09747aff 100644
--- a/resources/templates/provision/yealink/t41p/y000000000036.cfg
+++ b/resources/templates/provision/yealink/t41p/y000000000036.cfg
@@ -355,7 +355,7 @@ sip.nat_turn.port =
 ##                                   Echo Cancellation                               ##
 #######################################################################################
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t42g/y000000000029.cfg b/resources/templates/provision/yealink/t42g/y000000000029.cfg
index 0b1c924db..7b1055ff5 100644
--- a/resources/templates/provision/yealink/t42g/y000000000029.cfg
+++ b/resources/templates/provision/yealink/t42g/y000000000029.cfg
@@ -355,7 +355,7 @@ sip.nat_turn.port =
 ##                                   Echo Cancellation                               ##
 #######################################################################################
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t42s/y000000000067.cfg b/resources/templates/provision/yealink/t42s/y000000000067.cfg
index 44c0d1d49..1df3ec3f2 100644
--- a/resources/templates/provision/yealink/t42s/y000000000067.cfg
+++ b/resources/templates/provision/yealink/t42s/y000000000067.cfg
@@ -544,7 +544,7 @@ voice.jib.wifi.adaptive=
 #######################################################################################
 voice.echo_cancellation =
 voice.cng =
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 
 ################################################################
diff --git a/resources/templates/provision/yealink/t42u/y000000000116.cfg b/resources/templates/provision/yealink/t42u/y000000000116.cfg
index 9962aa337..9e8c113aa 100644
--- a/resources/templates/provision/yealink/t42u/y000000000116.cfg
+++ b/resources/templates/provision/yealink/t42u/y000000000116.cfg
@@ -356,7 +356,7 @@ sip.nat_turn.port =
 ##                                   Echo Cancellation                               ##
 #######################################################################################
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t43u/y000000000107.cfg b/resources/templates/provision/yealink/t43u/y000000000107.cfg
index edb242682..6f1848843 100644
--- a/resources/templates/provision/yealink/t43u/y000000000107.cfg
+++ b/resources/templates/provision/yealink/t43u/y000000000107.cfg
@@ -628,7 +628,7 @@ voice.jib.wifi.adaptive=
 #######################################################################################
 voice.echo_cancellation =
 voice.cng =
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 ##V84 Add
 voice.ans_nb.enable=
diff --git a/resources/templates/provision/yealink/t44w/y000000000174.cfg b/resources/templates/provision/yealink/t44w/y000000000174.cfg
index dc5a04a86..2bd27f9fe 100644
--- a/resources/templates/provision/yealink/t44w/y000000000174.cfg
+++ b/resources/templates/provision/yealink/t44w/y000000000174.cfg
@@ -619,7 +619,7 @@ voice.jib.wifi.adaptive =
 #######################################################################################
 voice.echo_cancellation =
 voice.cng =
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 ##V84 Add
 voice.ans_nb.enable =
diff --git a/resources/templates/provision/yealink/t46g/y000000000028.cfg b/resources/templates/provision/yealink/t46g/y000000000028.cfg
index b11576942..47d6c6f80 100644
--- a/resources/templates/provision/yealink/t46g/y000000000028.cfg
+++ b/resources/templates/provision/yealink/t46g/y000000000028.cfg
@@ -381,7 +381,7 @@ sip.nat_turn.port =
 ##                                   Echo Cancellation                               ##
 #######################################################################################
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t46u/y000000000108.cfg b/resources/templates/provision/yealink/t46u/y000000000108.cfg
index 30f8e014b..44133f04f 100644
--- a/resources/templates/provision/yealink/t46u/y000000000108.cfg
+++ b/resources/templates/provision/yealink/t46u/y000000000108.cfg
@@ -619,7 +619,7 @@ voice.jib.wifi.adaptive=
 #######################################################################################
 voice.echo_cancellation =
 voice.cng =
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 ##V84 Add
 voice.ans_nb.enable=
diff --git a/resources/templates/provision/yealink/t48g/y000000000035.cfg b/resources/templates/provision/yealink/t48g/y000000000035.cfg
index 75c2cffaa..eaba13582 100644
--- a/resources/templates/provision/yealink/t48g/y000000000035.cfg
+++ b/resources/templates/provision/yealink/t48g/y000000000035.cfg
@@ -381,7 +381,7 @@ sip.nat_turn.port =
 ##                                   Echo Cancellation                               ##
 #######################################################################################
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =
diff --git a/resources/templates/provision/yealink/t48s/y000000000065.cfg b/resources/templates/provision/yealink/t48s/y000000000065.cfg
index 29f250c33..65c5629ac 100644
--- a/resources/templates/provision/yealink/t48s/y000000000065.cfg
+++ b/resources/templates/provision/yealink/t48s/y000000000065.cfg
@@ -577,7 +577,7 @@ voice.jib.wifi.adaptive=
 #######################################################################################
 voice.echo_cancellation =
 voice.cng =
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 
 ################################################################
diff --git a/resources/templates/provision/yealink/t49g/y000000000051.cfg b/resources/templates/provision/yealink/t49g/y000000000051.cfg
index 69c857631..5293d6ac3 100644
--- a/resources/templates/provision/yealink/t49g/y000000000051.cfg
+++ b/resources/templates/provision/yealink/t49g/y000000000051.cfg
@@ -314,7 +314,7 @@ sip.call_fail_use_reason.enable = {$yealink_sip_call_fail_use_reason_enable}
 ##                                   Echo Cancellation                               ##
 #######################################################################################
 #Enable or disable the voice activity detection feature; 0-Disabled (default), 1-Enabled;
-voice.vad =
+voice.vad = {$yealink_voice_vad}
 
 #Enable or disable the comfortable noise generator; 0-Disabled, 1-Enabled (default);
 voice.cng =