It is a very compact elegant looking table model system, comprising of a single button keypad with built-in two displays.  Each unit is having a small display facing inside for the operator and a big display facing outside for the waiting person; the outside display can be separated for wall mounting also.

On pressing the button on any unit the small inside display of all the units keeps on changing in progressive order.  Anytime an operator presses the button to call the next person in waiting, his outside no. as well as the inside small display on all the units changes simultaneously to show the new running token no., but the outside display on each unit will show the actual no. being attended at that particular counter.