I have a schedule task in Windows 7 that makes a call to an extension that forwards to a IVR. All that IVR does is play a horn on our Snom PA-1 to notify our production staff that it is break time and then after 5 seconds it "Ends Call". Now that we've upgraded from v12 to v12.5 it now plays the "thankyou_goodbye.wav" file when it's done. Why does it play that WAV file now and how do I stop it from playing? I could try deleting or replacing that WAV file, but I'm guessing it is used elsewhere and don't want to break anything.