I have a Comdial 1432B system in use and have a question about a fast blinking Led on a programmed button for Station ITCM, When the Botton is pressed the correct station beeps and I can communicate, but I see on my 10 station that the led next to the programmed station 12 led is blinking fast and I can not seem to remove it . I am sure its something simple but it eludes me.