FCC Regulations requires every phone in a school to have the ability to reach an outside 911 operator by only dialing the (911) keys. Older systems require you to access an outside line first. The third party PA system company is now manufacturing thier systems to be 911 compliant. Before the change any DKT can access the PA system using a BUTTON programmed for (Line-4). I now need to add a (9), (*) and (1) after the CO is opened. This can be accomplished by programming the BUTTON (#7004), (9), (#) and (1). Now the issue is that the button does not stay light through the duration of the connection, or does it show a live connection on other DKT's. Which is imperative due to the number of DKT's throughout the building. Any suggestions?