I've setup voice notification for alarms which is working great. When I dial in I'm offered other features which I don't know how to configure. The voice prompts me to enter "3 for control" or "4 for station status". If I enter 3# or 4# I'm asked for a station number then after entering a number I'm told the station doesn't exist. Where can I read up on this? I'd like to know what a "station number" is & how I can configure one.