The Informer ALI EL Display connects to all major PSAP CPE equipment through a serial port (RS 232) connection. When a 9-1-1 call is received at the PSAP the caller's street address will be retrieved from the ALI database by the ALI Controller and is displayed on the Informer ALI EL Display.

The ALI EL Display can also be used as a VT100 display (80 x 24 characters) and is equipped with keyboard and printer ports.