Change the Emergency Code to another value.
Please keep in mind that 9 is a leading digit for a LOT of other features in the 5000. This has been the case with this product AAAALLLLLLLLL the way back to the late 90's when this product was released as the Axxess. It is possible to change all the feature codes that begin with 9 to begin with something else, like 8. But you will have to do this EVERY TIME you create a new database or turn on a defaulted system. Is it REALLY that difficult to train a client to use an "Outgoing" button, or to press a Call Key, or to dial 8 (the default Outgoing code), rather than 9?