diff --git a/resources/templates/provision/yealink/t28p/{$mac}.cfg b/resources/templates/provision/yealink/t28p/{$mac}.cfg
index 7f9f2d4050..d34d1b04e0 100644
--- a/resources/templates/provision/yealink/t28p/{$mac}.cfg
+++ b/resources/templates/provision/yealink/t28p/{$mac}.cfg
@@ -140,7 +140,7 @@ account.1.session_timer.refresher =
 account.1.enable_user_equal_phone =
 
 #Specify whether to encrypt the SIP messages; 0-Disabled, 1-Forced, 2-Negotiated;
-account.1.srtp_encryption =
+account.1.srtp_encryption = {$yealink_srtp_encryption}
 
 #Configure the RTP packet time. The valid values are 0 (Disabled), 10, 20 (default), 30, 40, 50, 60.
 account.1.ptime =