diff --git a/app/vars/app_defaults.php b/app/vars/app_defaults.php
index ad24b8d958..95a39b615c 100644
--- a/app/vars/app_defaults.php
+++ b/app/vars/app_defaults.php
@@ -32,6 +32,7 @@ $vars = <<<EOD
 {"var_name":"hold_music","var_value":"local_stream://default","var_cat":"Music on Hold","var_enabled":"true","var_description":""},
 {"var_name":"global_codec_prefs","var_value":"G7221@32000h,G7221@16000h,G722,PCMU,PCMA,GSM","var_cat":"Codecs","var_enabled":"true","var_description":"RzcyMjFAMzIwMDBoLEc3MjIxQDE2MDAwaCxHNzIyLFBDTVUsUENNQSxpTEJDLEdTTSxIMjYzLEgyNjQ="},
 {"var_name":"outbound_codec_prefs","var_value":"PCMU,PCMA,GSM","var_cat":"Codecs","var_enabled":"true","var_description":"ZGVmYXVsdDogUENNVSxQQ01BLEdTTQ=="},
+{"var_name":"media_mix_inbound_outbound_codecs","var_value":"true","var_cat":"Codecs","var_enabled":"true","var_description":""},
 {"var_name":"xmpp_client_profile","var_value":"xmppc","var_cat":"Dingaling","var_enabled":"true","var_description":"eG1wcF9jbGllbnRfcHJvZmlsZSBhbmQgeG1wcF9zZXJ2ZXJfcHJvZmlsZSB4bXBwX2NsaWVudF9wcm9maWxlIGNhbiBiZSBhbnkgc3RyaW5nLiB4bXBwX3NlcnZlcl9wcm9maWxlIGlzIGFwcGVuZGVkIHRvICJkaW5nYWxpbmdfIiB0byBmb3JtIHRoZSBkYXRhYmFzZSBuYW1lIGNvbnRhaW5pbmcgdGhlICJzdWJzY3JpcHRpb25zIiB0YWJsZS4gdXNlZCBieTogZGluZ2FsaW5nLmNvbmYueG1sIGVudW0uY29uZi54bWw="},
 {"var_name":"xmpp_server_profile","var_value":"xmpps","var_cat":"Dingaling","var_enabled":"true","var_description":""},
 {"var_name":"bind_server_ip","var_value":"auto","var_cat":"Dingaling","var_enabled":"true","var_description":"Q2FuIGJlIGFuIGlwIGFkZHJlc3MsIGEgZG5zIG5hbWUsIG9yICJhdXRvIi4gVGhpcyBkZXRlcm1pbmVzIGFuIGlwIGFkZHJlc3MgYXZhaWxhYmxlIG9uIHRoaXMgaG9zdCB0byBiaW5kLiBJZiB5b3UgYXJlIHNlcGFyYXRpbmcgUlRQIGFuZCBTSVAgdHJhZmZpYywgeW91IHdpbGwgd2FudCB0byBoYXZlIHVzZSBkaWZmZXJlbnQgYWRkcmVzc2VzIHdoZXJlIHRoaXMgdmFyaWFibGUgYXBwZWFycy4gVXNlZCBieTogZGluZ2FsaW5nLmNvbmYueG1s"},
@@ -341,4 +342,4 @@ EOD;
 		//save the vars.xml file
 			save_var_xml();
 	}
-?>
\ No newline at end of file
+?>