diff --git a/resources/templates/provision/yealink/t56a/{$mac}.cfg b/resources/templates/provision/yealink/t56a/{$mac}.cfg
index de9a18df35..ff8d0b416e 100644
--- a/resources/templates/provision/yealink/t56a/{$mac}.cfg
+++ b/resources/templates/provision/yealink/t56a/{$mac}.cfg
@@ -276,7 +276,7 @@ account.1.codec.ilbc.rtpmap =
 
 account.1.codec.opus.enable = 1
 account.1.codec.opus.priority = {$yealink_codec_1_priority}
-account.1.codec.opus.rtpmap = 
+account.1.codec.opus.rtpmap = 106
 account.1.codec.opus.samplerate = 
 
 account.1.codec.pcmu.enable = 1