I have an AVP connected to a Merlin Legend and it seems to have lost the greetings and messages after a power surge last week. When you dial an extension, AVP answers and asks for extension #, then password. After inputting password, goes to silence for about 15 to 15 seconds, then repeats the request for the extension # again. Have tried a power down and back up, but no good. Any ideas? Not sure if customer has back up tape and can't find one.