I have a customer that wants to be able to call in and change night greeting on their phones in case of closure, snow storms, etc. They want to be able to hit the systems AA and I am sure there is an easy way to do this I am just drawing on blank on a secure way of going about it. The customers phones are swamped during the day and they all leave at 5:30 so I am trying to make sure i can test this without having to keep someone there for a couple of hours after close.