diff --git a/db_scripts/diff/15709.down b/db_scripts/diff/15709.down
new file mode 100644
index 00000000..61d791b8
--- /dev/null
+++ b/db_scripts/diff/15709.down
@@ -0,0 +1,10 @@
+USE provisioning;
+UPDATE voip_preferences SET type = 1 WHERE attribute = 'transcode_dtmf';
+UPDATE voip_preferences SET type = 1 WHERE attribute = 'transcode_cn';
+USE kamailio;
+UPDATE usr_preferences SET type = 1 WHERE attribute = 'transcode_dtmf';
+UPDATE usr_preferences SET type = 1 WHERE attribute = 'transcode_cn';
+UPDATE dom_preferences SET type = 1 WHERE attribute = 'transcode_dtmf';
+UPDATE dom_preferences SET type = 1 WHERE attribute = 'transcode_cn';
+UPDATE peer_preferences SET type = 1 WHERE attribute = 'transcode_dtmf';
+UPDATE peer_preferences SET type = 1 WHERE attribute = 'transcode_cn';
diff --git a/db_scripts/diff/15709.up b/db_scripts/diff/15709.up
new file mode 100644
index 00000000..d4487ebf
--- /dev/null
+++ b/db_scripts/diff/15709.up
@@ -0,0 +1,10 @@
+USE provisioning;
+UPDATE voip_preferences SET type = 0 WHERE attribute = 'transcode_dtmf';
+UPDATE voip_preferences SET type = 0 WHERE attribute = 'transcode_cn';
+USE kamailio;
+UPDATE usr_preferences SET type = 0 WHERE attribute = 'transcode_dtmf';
+UPDATE usr_preferences SET type = 0 WHERE attribute = 'transcode_cn';
+UPDATE dom_preferences SET type = 0 WHERE attribute = 'transcode_dtmf';
+UPDATE dom_preferences SET type = 0 WHERE attribute = 'transcode_cn';
+UPDATE peer_preferences SET type = 0 WHERE attribute = 'transcode_dtmf';
+UPDATE peer_preferences SET type = 0 WHERE attribute = 'transcode_cn';