IST-2 Line Expansion Unit

The ILE is a 50-button expansion panel used in conjunction with an IST-2 to increase the number of line buttons available to IST-2 users. A single IST-2 will support up to three ILEs for a total of 200 line buttons. The ILE lines provide the same functionality as IST-2 line buttons.


  • Up to three units can be added to each IST-2 for a total of 200 line buttons
  • Each unit provides 50 additional buttons
ISt-2 Line Expansion Unit